I think it will cause confusion with 22 lr in the public for the next 20 years. Winchester keeps making new designed cartriges when really none of them really outdue what was produced since 1925. It furiates me I bought a 7mm wsm rifle in 2001 and they haven’t made cartriges for it in the last 15 years. Shame on Winchester. They were supposed to be the latest and greatest. No excuses. Bullshit.

You are certainly correct MR.
The 21 is a good idea, just a few hundred years late, if the costs of ammo and arms to launch this new child is one penny more cost to the consumer, it dies.
Manufacturers are looking to cut high costs associated with production of 22lr, which is a pain, an expensive pain to manufacture.
Let’s remember the .20 Remington Magnum Rimfire, an excellent round, non-heeled projectile, ballistics are supirior to the .22 magnum cartridge, feeds reliably and is hella accurate, but it slipped into obscurity.
Mainly due to Remington being the only U.S. manufacturer of rifles to shoot the round, the ‘twenty’ was wsy ahead of its time, which scares a lot of folk. Much like the new 21 is.