It has to be taken as a given that all encryption deployed today will get “weaker” over time, so that’s already accounted for. The solution is that you just hav

It has to be taken as a given that all encryption deployed today will get “weaker” over time, so that’s already accounted for. The solution is that you just have to live with some risk from older algorithms, and make sure the replacement schedule is reasonably fast. You only need the absolute highest levels of security for a very few things, and if those are so critical then cutting off access is probably the right choice if the best algorithms aren’t available. Presumably those situations are in well-controlled environments and everyone is aware and can manage that type of coordination.