Bluetooth remains an 'unusually painful' technology after two decades

Bluetooth is governed way better than any other comm standard. For example, WiFi implementation incompatibilities are legendary, and solving them is left to device makers instead of a specialist body. Certification is also non-existant.

For Bluetooth, at least for a major vendor, it's unthinkable that they wouldn't be able to come to Bluetooth SIG, and call out the issue, and have it worked on until it's solved. But more usual, issue will be highlighted at the certification, and test stage.

People seem to complain a lot about Bluetooth, yet I owned dozens of devices of all vintages and they all played nicely with each other, except for a cheapo pair of MPow earbuds off Amazon.

I even managed to transfer old school photos off my ancient 2003 NEC flip phone to my current Android phone even though the former uses Bluetooth 1.1 and the latter 5.1. I also fondly remember using Bluetooth in school to transfer ringtones and wallpapers to that phone from my Windows XP PC, or to and from other kids' phones and it always worked.

Maybe I was really lucky, but for all its apparent faults Bluetooth has always served me well and I personally can't really fault it for its intended purpose.

As former SDR developer who dived into Bluetooth firmware at some point, I can only attribute the connectivity issues some Bluetooth devices have to just poor firmware design with insuficient testing, or most commonly, bad antenna design with insufficient real world testing from the device manufacturer (experienced RF graybeard engineers are expensive $$$, and most HW companies are sweatshops who pay their engineers peanuts, so there's the main problem that leads to the infamous Bluetooth connectivity issues IMHO), and not to issues with Bluetooth tech itself, fact confirmed after lengthy discussions with our HW guru in the lab. From my experience Sony, Bose and Panasonic put great thought into antenna design while Samsung and LG can be pretty hit or miss. I have not looked into Apple's though, so I can't say, but from the rest of their HW design and the talent they usually have in the HW department, I can assume it's top notch as well.

The 2.4GHz spectrum is way more crowded today than it was in 1999 when the first Bluetooth version came out, so getting uninterrupted real-time audio streams reliably on it is hard, but not impossible.

One thing I can fault the Bluetooth SIG is that the spec is very complex and full of optional bits which could lead to many pitfalls for the uninitiated engineers and worse, gives developers too much freedom in implementation, meaning your widget might not play well with another widget because each took their allowed freedom in different directions, though Bluetooth chips from reputable manufacturers who know what they're doing, like CSR, TI, SiLabs and Nordic are nearly bulletproof in this regard, provided you also do a good job on your antenna design.

My AirPods Pro are likely the only Bluetooth device I've seen that's not only easy to pair but also works every time without fail. The other day they actually did fail though, but that was because of massive interference of 2.4GHz that made nothing work. Can't really blame Bluetooth for that.

I do find it a frustrating technology. As the article says, pairing can be quite hit and miss.

I generally have to search how to pair devices when I have to set it up on a new device, even for devices I've had for years! They're all different, and it can be unreliable.

I have read that it suffers the interoperability issues because the spec is complex with many optional bits in it, although I don't know how true that is.

Buy better printers, or change your expectations. I haven’t had problems with printers as long as I can remember, except a problem with large spool files created by PowerPoint.

I used to work as a technician running computer labs. This job extended to printer repair. I later wrote software to manage printers. Some printers are really very nice to work with and not too hard to repair. Some laser printers are built like tanks and give you glorious crisp text forever. Some inkjets produce vivid or subtle colors with fantastic durability and consistency (assuming you use decent paper). Some people have unrealistic expectations about what a cheapo inkjet can do, or unrealistic expectations about what kind of paper you can use, and some people just buy the wrong model.