I can’t find evidence of this, and the LGBA website says their primary funding comes from individual donations.
https://staging.lesbianandgaynews.com/2021/10/gary-powell-wh...
The above article makes this point:
Why would it donate to an organisation that campaigns for lesbian, gay and bisexual rights, that has an overwhelmingly left-wing membership, and that was founded by two left-wing lesbian feminists?
- given the LGBA’s position is:
“(W)e do not, and will not, forge links with, or accept funding from, any organisation… that seeks to undermine women’s reproductive rights.”
- which the Heritage Foundation oppose, I gather.
I’m inclined to believe the Heritage Foundation link is a untruth, to be honest. Given the LGBA’s charitable status I guess we’ll get definitive evidence at some point.
I think being such a niche cause that only your notional political enemies pursuing a divide and conquer strategy will work with you internationally is what most people mean when they accuse a cause of being "astroturfed"
[For the avoidance of doubt I fully agree that in other respects, they do not share the same political views and that they are not closet hardline antifeminists in disguise]