My experience has been that even among the people invoking a concept of "straight pride", they aren't actually even claiming to be "oppressed" except satirically. The point is to stand on a (particular interpretation of) principle with regards to equal treatment.

As for the rationale, in my experience this sort of rhetoric is completely typical for Jordan Petridis (@alatiera).

Bazaar does not much at the moment beyond what Gnome Software or KDE's Discover is capable of. The features are nearly same: install/uninstall, search, flathub repo select and basic filtering options (free software, flathub only, maintained only). Plus this progress bar skin.

This whole fuss feels like it's on the same levels as that GIMP fork from few years ago which just took the code and replaced every occurrence of name because it's being considered by some people as an insult. Glimpse "project" is dead and honestly, I expect that this supposed game-changing "app store" here will be dead as well soon. Because people behind focus on a trivial issue instead of making their software actually standing off and rich on features.

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If they really consider this progress bar customization crucial for Bazaar to function then there should be a way to provide own texture from file, and colors from standard picker that would form either a gradient or bars. This is a really simple problem to solve - without shouting, calling names and pretending of being attacked.