Earlier quoted context omitted.
Being soldered on is a huge issue to 99% of people and businesses wanting to repair or upgrade something. I don’t have the tools or skills to replace soldered on memory chips when they fail. Nobody at my place of work does. Nobody was doing that type of work in a warranty centre I worked in either. I’d need to buy an entire motherboard which will much more expensive, and likely more time consuming, than swapping a co…
In the almost 30 years of using Mac’s at home and various desktop pc’s in the workplace I don’t think I have ever seen ram fail. Replaced plenty of old school failed disk drives however.
That being said, I really did have one bad stick of RAM once in my life, and it really does cause strange seemingly random problems.