Shitcoin are reason why they survived their first bear market. So what is problem with it? They are not their promary target, main focus is on bitcoin.
Discussion
Fraud is the reason they survived their first bear market*
FTFY
They did not commit fraud.
aiding and abetting
How they do aiding and abetting? Giving people ability self custody of some shitcoins?
What do people if trezor don't give tham this ability? They go with ledger or have it on exchange. Nobody buy shitcoin because trezor give them ability to selfcustody it on HW wallet. If anythin trezor limit which shitcoin they buy, because trezor support subset of shitcoins and suit even less.
Lot of shitcoiners in time transform into bitcoiner. Bitcoin first HW wallet with support of some shitcoins is great tool for help them with transition.
They directly make money when people purchase crypto through the Trezor Suite. Pretty straightforward...
They don't give user any new ability to buy shitcoin which does not exist without them. They does not have exchange, they just agregate already existing exchanges.
Only ability to buy some crypto which they created is Vexl, which is P2P, inteded only for bitcoin without KYC primary with cash.