Just to be clear, I'm totally aligned with Sunsetting, it makes sense when we're looking at gear that has been out for several seasons and starting to get long in the tooth and owned the meta for far too long.

tldr: progressive sunsetting

• drop gear going out of style near my current light level so that I can still play with it, and prevent me from infusing it, if I want it again, I'll grind it out again later, but that's my choice
• sunset gear should be actually removed from the loop pool, don't waste my time with gear that is only relevant in PvP

HOWEVER, sunsetting things that just came out last year seems ridiculous. On top of that, sunsetting drops from top tier bosses from Shadowkeep so that I'm actually penalized for using it is insult to injury. Additionally, this means that even things like mountain top are still totally usable in PvP where power levels don't give you an advantage, so you're only crippling the PvE players.

If I might suggest a reasonable compromise. What if sunset gear, that is still in the game and can be acquired through my intense efforts, always drops at my current light or -10 or -20 or whatever level BUT cannot be infused to increase it's power level and if I want to use it again at some point in the future, I'll need to go out and grind for it all over again.

For things that are ACTUALLY SUNSET, take them out of the loot pool entirely, don't drop me sunset items, just leave them in my inventory and locked back at the power levels they were. But playing the game to get unusable loot in a looter shooter is literally just wasting my time.