To take Github as an example, here's how most people would comment on a project's issue tracker:
Open issues page -> write comment.
Here's the same flow for other forges:
Open issues page -> go to sign-up form -> open password manager -> generate & save password -> back to sign-up form -> open email program -> (wait for email to arrive) -> click link in email -> go back to issues page -> write comment.
There's no way anyone can sensibly compete.