SS7 flaw?

What are the dangers from this? Could someone exploit this flaw to intercept my camera stream? If so, How easy would it be?

ETA: I know SS7 is bigtime, and ordinary people aren’t normally targeted, but I have an obsessed stalker who is very tech savvy. I know he has hacked my cam and/or my phone one way or the other before. (I won’t go into details because it’s not germane, unless someone thinks I should.)

The only thing related would be two factor authentication via SMS? He’d still need your Wyze credentials…