Dont know about the Bitsa one specifically but some banks do have such prepaid cards with no KYC, up to 150€. For example, Banco Montepio has a non-KYC and KYC version of their prepaid card. The former is limited to 150€ and cant be topped up. I have myself used this card, the version of it that doesnt require KYC. You do however need to get it from one of their branches, it isnt available anywhere else. They do not ask for any ID.
edit: this one, from Unibanco, has a 2500€ limit and doesnt require KYC if purchased in-branch (if ordered online it requires activation, not sure if theyll ask for personal info to activate it). The whole idea is that it works as a gift card. Of course nothing stops you from using it yourself.