As you may know by now, there is a wide range of brokers out there in the world.
Some of them have been around for a while and some of them are relatively new to the spotlight. I don’t say that these newcomers here don’t know what they are doing nor that they are untrustworthy. All Im saying is that they have less experience than the brokers which had been here for a while. The time which they have been active for means that they are unproven during hard times at the stock market.
An example here are the stock market crash in 2008 and the whole GameStop trading frenzy at the beginning of this year (2021).
If you had followed the GameStop trading frenzy you might know what happened there. There were a lots of brokerages which had restrict trading in some form while some other brokerages didn’t have that.