Most subscription software is a terrible deal in comparison. I have tried to avoid subscription software as much as possible. But we have a family subscription for 1Password because $REASONS. We pay $60 per year for (in comparison to Office) a small software product, with small cloud storage, of which we only need a couple of megabytes for storing encrypted passwords.
Also, I wonder whether this will lead to a slower development of the software.
Most likely. Once you are locked into some proprietary data format, it is often more expensive to move to an alternative, and it is easier to subscribe. Once a substantial part of the user base has a subscription, there is no more need to entice users with a new version.
Subscription software does not benefit the user.