I know this is going to sound condescending and rude, and I apologize in advance, but this is sort of like having a conversation with a much younger version of myself. When I was younger, I couldn't get past the fact that people judged a book by it's cover, or that you couldn't see past my blue hair and NIN shirt... but the truth is perception is your reality. If you want to be taken seriously, you need to 'dress' the part. It might be 'cringe' to you, and it was to me when I was younger. I'm not saying this site needs to be whitewashed in corporate branding but it could be cleaned up in a way to make it merely passable. Floating hearts that cascade down the page? Why? Whats the message that has anything to do with pledging to defederate against facebook? The branding seems all over the place.
There is a reason that Change.org doesn't look like this site. There is a reason that if you were hungry and saw two food trucks parked right next to each other, one with a professional appearance and the other that was a rusty van with the words 'Tacos' spray painted on the side, you'd probably ere on the side of caution and approach the one that wouldn't look like it was going to give you food poisoning. Perhaps you would miss out on the best tacos in the world, sure.. there is that chance... but there is also a chance that you dodged a bullet and played it safe and lived another day.
I stand by the fact that I believe this linked website is horrible if your goal is to get people to sign up to defederate against facebook.