I believe it is artificial spend. Use debit card to pay your CC. This trick is there since ancient ages (old bonussaver of $30). Extra $$ inside CC can then withdrawn without any spend through other means.
But $10 per mth is a bit of hassle, and I rather use the spare $10k to pay off my housing loan. Because the $10K will stuck for a few days also.
Unless you have multiple accounts...
Ur method is good but like what u say a hassle and have 0 benefits.
Mine I think much better. I do not pay anything upfront to my credit card.
Yet I can still earn interest from the money from credit card
I.e. I am able to use the money in credit card to earn interest from saving account at the same time earning the $10
Theoretically I earn much more than $10
So u won't think it as a hassle if you know the way like me.