My question is simple, by creating those little UTXOs, aren't the morons that create them just burning satoshis forever? Cause with the size of a transaction today, fees will almost always be higher than the value of these UTXOs.
Technically no, since you can spend them. And assuming Bitcoin price would be higher in future, it's possible minimum fee rate (i refer to minimum relay fee on full node software) would be lowered where it's worth to use/spend those UTXOs.
If this Ordinals stupidity keeps going on, for years to come, become more popular and a lot of idiots creating shitcoins and images that children do on Paintbrush and saving them in the Blockchain with these unspendable UTXOs, couldn't this harm bitcoin at some point?
I would say yes, especially if TX fee remains high. Although certain people perceive less Bitcoin in circulation would make their Bitcoin more valuable.