I do not have an opinion of Citrea because I've not studied it.
I've bridged 10 Testnet over into "cBTC"... which just feels like an ETH altcoin.
All of the services attached to Citrea seem to be open source stuff and none of it is actually turned on. Everything is "coming soon"... thus far, I haven't actually found a way to try to blow some of these NFT's or other various large spam items ass out of the water using their testnet work. (I've possibly just not found it yet, I'm still searching. It should be obvious on the blockchain when I find something I can abuse.)
Has anyone else had any luck using Citra bridged Bitcoins to create spam?