a single backup witness is enough to push your transaction through

This is not accurate because it only takes 16 consensus witnesses to enforce this soft fork and roll back blocks that include ninjamine ops.

however the feature is one of the early features of legacy chain.

I never said it wasn't an early feature.

Did you think I was implying that it was built for this exact purpose to circumvent a blockade?
This was not my intention.

Also as far as I know the goal was also different - to vote in enough top witnesses controlled by JS, so he could single-handedly dictate the fate of the network.

This was one big concern but the main point of contention is that the ninjamine was always promised for network development. Sun did crazy things like leak videos of himself saying he was going to absorb the community and the token into the Tron blockchain, and then he'd delete it and act like it never existed. We tried to talk to him directly and he refused to communicate and it make witnesses extremely nervous.

as long as it is no more than 10 ways

Ah ha good to know I wasn't sure if there was an explicit limit.
Of course the limit can be implied by a minimum unit (1% = 100 limit, 0.01% = 10k limit)
It could never be infinity under any circumstance even without a set limit.