I'm confused at why an LGBTQ community wouldn't take the strategy of forceful adoption. Mostly under the point that they offer a home to all. However, it would negate any exclusion arguments against those communities.
Take your adversaries symbols and make them yours kinda thing. A Yankee Doodle approach.
The straight flag has been around for quite a while. It's black and white horizontal stripes. The ally flag is the straight flag with a rainbow "A" on it.
These guys in the picutre didn't bother doing any research evidently and started flying the wrong flag.
The straight flag was made by homophobes... above comment was proposing that we hijack it and make it part of the lgbtq+ community, fly it in pride parades, etc., the same way we turned "queer" from a slur into an identity label.