We are weighing various tradeoffs.
The delay means that more communities will have control over the decision they make themselves.
A community that has many users with this problem, or even a community that has a single user with this problem, could decide “we want to stay on a version that works for them” and stick with the next stable release, which will continue to get security patches from the maintainers for 6 months after it’s released.
Others could choose to patch it beyond that date if there were sufficient demand or self-motivation to do so.
Other communities can make a different decision if they determine that is what’s best for their members.
Fallbacks have been considered to some degree, but doing more than what we are currently doing is not a cost we are prepared to bear right now.