Do two daily rotating Bonus Drops for each activity instead, and keep the gear from previous seasons in the pool. Gives people more to farm and makes the game more rewarding.

Very slippery slope to go down.
You cannot just start believing people at their word from a legal perspective. Then anyone can blame anyone they don't like of anything. There has to be a due legal process.
On a personal level though, if anyone makes such claims, support them and be there.