lumpenproletariat boycott

I really doubt it's the lumpen doing the boycotting. The lumpen are people without regular employment, if any. Most of the boycotters are prob proletarian or petite-bourgeroies (or pmc).

Reactionary workers are worse than pro-lgbt bourgeoisie

The reactionary proles are worse in some ways, but they aren't the ones denying lgbt people healthcare and housing etc. The pro-lgbt borugeoisie are opportunist. If you listen to them they'll tell you that they signal being pro-lgbt because diversity makes them more money. They literally say this. When this is no longer true, they'll change their minds.

Edit: but your larger point about corps signaling less pro-lgbt sentiment is def worrying. Canary in the coal mine :100-com: