It depends what kind of Raspberry Pi device you are using for your bitcoin node, and I know some people who are using Pi4 and run full and pruned nodes without any issue, but important thing is to have enough RAM and solid hard drive.
I don't think you can't expect to run Bitcoin on something like Pi Zero or any other devices with less than 2GB RAM, and I am not sure what kind of Raspberry clones he is talking about.
Some old and forgotten computer could probably do decent job of running a node with enough ram.
When I bought a Pi Zero I thought that maybe someday I'll attach an old HDD and transform it into a node and maybe an Electrum server too.
Then I've read that I went for too cheap/weak Pi. Well, one has to make mistakes in order to learn. So I'll have to buy a better Pi, maybe.
The problem is that I will have to also find a way to connect the HDD to Pi (connectors and maybe cooling too), then the install use to be a pain in the a$$ for me as Windoze user, then I have to be careful with the open ports in the router.. Or buy a proper box with CPU, RAM, cooler and where I can stick in HDDs? All in all, it's something that keeps getting postponed.
Unfortunately right now I tend to better buy a couple of Lego and reading books for my kids than invest into a node that I'm not convinced it'll make a difference.
But maybe someday this will change... eventually....