No one was condemning your interpretation but your mocking (which is how it sounds to me, and apparently from other comments not just me) of the relationship the artist chose to draw and to share freely with fans. How hard is it to type "Not really my ship, but I enjoyed your illustrative style" instead of being sarcastic about the contents? And really, we're supposed to go along with JKR, who is always bleating about love being the most important thing, giving Sirius near-total redemption while giving Snape only the label "brave"? It's not really my ship either but I'd much rather see affection than canonical hostility.