I think you are 100% right.
An extra bye week after the season for all playoff teams would be best for players health and safety.
NFL has shown they care zero about player safety. If they did, there wouldn't be Thursday games all year. Football is very violent and takes a toll every week. There also wouldn't be games added to the schedule. The best season would be 12 games with 2 bye weeks throughout. Every sport used to have less games in their early days and for good reason. But all of them have since added more games. The greedy owners, commish, ad execs want as much money as they can extract. Players are just cattle they shove out there to make this happen. 17 game seasons is absurd.
So don't expect the NFL to do anything here in regards to their safety. The money will come first in this decision.
I am glad there is a thread where this can be discussed, though. This shouldn't be taboo. You can care about Hamlin's safety and wonder about the game separately. There was a lot at stake here. Seeding, divisions, fans attending with their money, etc. I seriously doubt they outright cancel the game.
Not to mention, how about fantasy football? This is championship week in most leagues. Both of these teams have high profile fantasy players. Not to mention the betting world. A lot still up in the air right now.