If I want to upgrade to a better hardware wallet, would it be okay to restore a seed phrase that was generated by a ledger? Or would I be better off generating a new seed phrase?

I bought a ledger a couple years ago for my first hardware wallet and it generated a seed phrase.

I memorized the seed phrase.

I'm paranoid because Trader University said he doesn't recommend ledger because it's not open sourced and they mismanaged customer data and leaked customer info.

I want to upgrade to something like a coldcard but I need to know:

Would it be unsafe to backup a ledger-generated seedphrase onto a trezor / coldcard? Can you even restore a seed phrase with cold card or can you only do that with trezor?

The reason I don't want to generate a fresh seed is because I have to memorize a new seed phrase again.

What do you guys think?