Well it kinda is. Every other client will see different accounts and not subaccounts nicely merged together. People will have to follow 5 Wills, one for each topic. They will appear duplicated as if they were different personnas, which is not the expected UI on the Damus user.

Imagine seeing 5 Will with my the same picture and then a 6th as a scammer. Everything gets more confusing to those not merging subkeys as one.

I am not against the idea. It's just not as "free" as you are describing.