(Ain't possible with BA - deny it if you can.)
OK. It is perfectly possible and very simple to get a seat assigned on BA without being Silver or Gold. There. Done. Easy. I will let you research how and why that's true for yourself, if you'd care to be better informed.
That at least is totally accurate.
Not in the least can it be called "totally accurate". It is your accurate personal opinion at best. BA handle seating for me better than any other carrier I know of or have flown. That at least is totally accurate as a statement.