It's ultimately because the 22LR user desperately wants their pet chambering to be anything but obsolete. Take, for example, the most recent "technological advancement" in 22LR: Federal's "Punch", which is just a CCI stinger loaded with an even lighter bullet to get an extra 50fps (as if it fucking matters) and nickel plated to make it look different than all the other 22LR despite having the exact same limitations that are a result of fundamentally unfixable outdated technology.

The 22LR user desperately wants their obsolete technology to be modernized, but it simply isn't possible. This isn't the same problem that, for example, 45 Colt had, where it was originally designed for black powder, yet now eclipses 44 Magnum. No, the problem with rimfire is inherent, fundamental, and unfixable. You can't put in a longer or heavier bullet to make use of modern powders because the slow twist is necessary to not shred the soft lead bullets for which the cartridge was designed. The actual most technologically advanced advancement in 22LR, the Aguila SSS 60 grain load, is not even viable most of the time, again because of the twist rate and that it uses a nonstandard case length. And don't get me started on the problem of the heeled bullet.

Winchester gave you a chance in 1903 to fix much of the problem when they created the .22 Winchester Automatic, and your great-great grandfather rejected it.

FN again gave you the chance in modern times when they created the 5.7x28, which solves ALL of the technological problems of 22LR, and you rejected it.

Simply put, 22LR alone (and the cope that it continues to bring two centuries later) vindicates the ancient and pure Gnostic teaching that Hylics exist, and that unfortunately, they are the majority.