I don't quite agree w/ all this. I find Gholdengo still incredibly easy to fit onto any teamstyle or archetype I can imagine. It has amazing set diversity. Other than lay hazards, it can do whatever you want it to.
I agree that having combo spin + defog blogger is less of a perk than it used to be, but I dont think that's a hit againt gholdengo in particular; it's more a reflection of fat boots stuff popping up. It's still a stellar complement for dragon and fairy types. I will say that it can be annoying doubling up on ground/dark/fire weakness when you use gholdengo, because you also want to use the other great pokemon on a team like kingambit, dragapult, or raging bolt. Thankfully, those things can tera too. The only thing I find it truly struggles with it fat gouging fire.
Here's a big pile of Gholdengo sets
https://pokepast.es/2f359914a23b976b
I am finding the most success with defensive sets that can beat zama+moon+gambit w/ tera fairy. Dedicated stall breaking sets are good too. I want to try something like tera water + thunder, 4 attacks on rain. sounds spicy. NP tera blast + shadowball is secret OP, with any tera type!