[Etheryte]

This is also the first thing I noticed and regardless of it not being related to the software itself it is a red flag. Ironically the favicon on the page is sufficiently different and wouldn't be mistaken for Patreon's logo, at least in my opinion.

[huskyr]

A red flag for what? For not properly looking up if a design already exists?

[Etheryte]

A red flag for dishonesty, if you want a broader answer — it is entirely possible that the author hasn't indeed seen Patreon before, but as it is, Patreon is a very widely known company and it looks like a rip-off, even if it isn't. Much in the same vain you could make an apple with a bite your logo, but it would look like you're just a copycat.

[huskyr]

I've supported multiple Patreon campaigns, and i didn't recognise this logo. It's not featured prominently on their homepage and mailings. Calling something that looks like a simple oversight 'a red flag for dishonesty' sounds a bit unfair to me.