My one sub or like doesn't skew things. The telemetry is so borked right now, that 50 likes won't even put you anywhere close to the top of a list.
Subscribing helps make sure things are working properly. There have been at least 10 times when the library didn't update and send a notice to my subscribers. When that happens, I'll post a little note letting people know.
The liking thing. I do like my own work. I worked hard to create it. Showing that I support my own work isn't a bad thing. Having said that, I'd always blush when I first started doing it. I put myself out there, and that's scary. After awhile it became a badge of courage. sort of like saying, "My story is worthy of my like." As artists we're well known for picking apart our own work. It's my way of building my own confidence. Funny thing, it really has helped me.
Now, if you're using bots to add a bunch of likes and subs, THAT is wrong and skews things.