I honestly have 0 problems with this. They’ve gone over and beyond to support old licences far longer than it could be expected, and a password manager is the kind of sensitive and ubiquitous product for which SaS actually makes sense. Anyone remotely involved in anything similar knows it’s a PITA to keep up to date while keeping device compatibility, and the folks at 1P have been doing great work.
Subscription services to me are only justified if they are providing a SERVICE which they are with the web version and ability to sync through their own servers, however, using a local version with your own vault can be done without any service at all.
So to me this looks like them intentionally crippling their own software in order to force people into paying a subscription fee that is not necessary. They already hide the ability to purchase a standalone license for 1Password 7 trying to get people to pay the subscriptions so this is the next logical step.