I don’t think there is a default form of birth control for anyone. The Twitter thread though isn’t about that; it’s about straight and bi men taking responsibility for their end of sex with women and mitigating the risk of undesired pregnancy, and highlights the fact that the onus is placed almost exclusively on women.
So yeah, vasectomies aren’t one size fits all; no birth control is. But it’s a great option for a lot of men and there’s a certain amount of reductive scaremongering that goes on around it. The practical reality is that most guys aren’t deterred from getting a vasectomy by the cost.
And none here have.