Seems one of our moderators
made a post about this.
Can I give merit to my alt accounts?
No, this is frowned upon and will almost certainly lead to you receiving negative feedback if discovered.
I agree with this. It's because perhaps you will send merit to your alts for good reason. But the abuser would take advantage of that. If someone needs merit for any good reason, then just simply can write PM to reasonable member, or may create a post to get help from others. On the other hand, even a reputed member just makes a post I am alt of xxx then I believe someone automatically will send merit. So getting merit is not a big deal at all. So it's better always avoid sending merit to alt. We should judge our own quality.