This is a bunch of retro-grouch reverse-snobbism hogwash.
Buy a digital interchangable lens camera and make a conscious effort to both shoot a lot (and be willing to purge stuff, don't become a packrat) but also spend time experimenting and focusing on getting a particular shot or style of shot as best you can, technically first, and then artistically.
People who lack the discipline to be "intentional" without being forced to by the medium will not have the discipline to a)take the notes required so they can later understand how and why things didn't work, and b)shoot film long enough to actually learn the technical skills needed to then focus on artistic skills.
They'll find it frustrating because they'll get back a bunch of badly exposed, blurry shots and have no idea why. It might not even be their fault, because labs fuck up developing all the time, film can be bad (and its performance varies with temperature, age, etc) and film cameras can be horribly unreliable or broken and you have no way of telling unless you take it for repair.
Even the most serious, dedicated, methodical beginner will find it all exhausting unless they're practically autistic.
Digital is superior for serious beginners because beginners more than anything need to actually just go and shoot lots of photos, often...and know what when wrong when things don't work. And they need a minimum number of variables to keep track of.
If it's a film camera, they'll "save" the film, and worse, by the time they develop a roll, they won't remember anything about what they were doing.
None of these problems exist with digital. Not only are frames essentially free, and not only are the cameras nearly perfectly reliable - you can instantly see what did or did not work, and try again. Or try multiple things, and see immediately how it worked out.
You get complete metadata ranging from aperture and shutter speed, usually lens data, and various modes the camera was in and nowadays often even including location.
It becomes trivial to pop open your photo editing program and search for photos taken with a particular lens and effortlessly compare them down to the pixel, see histograms, etc.
Further, film is fucking terrible on a technical level; 35MM dSLRs surpassed it nearly two decades ago in nearly every technical capacity; micro 4/3rds / APS-C surpassed full-frame 35MM as well quite a while ago. Film has terrible dynamic range, resolution isn't very good except for expensive and low-sensitivity film...and usable ISO levels for natural light have terrible resolution. Forget about trying to shoot indoors unless you have some sort of lighting equipment, and that's a whole entire level of additional complexity.
If you're an experienced photographer who wants an extra challenge from film, fine.
But stop telling beginners film is superior. It is not, in any way/shape/form. It has not been for two decades.