Binance and Bitfinex have control over the one thing that matters most about Bitcoin --- the price. They exercise this control in the same way a central bank does --- they have access to an unlimited supply of "stablecoins" they can mint at will and use to buy/sell bitcoin as they see fit.
What matters the most is that nobody can take my coins from my wallet if I don't want them to and that I can send the coins to anybody I want, however much I want and whenever I want.
Really? So it doesn't matter that the bitcoins in your wallet are now worth about 1/4 of what they were a few months ago?
Where did all that value go? My guess is a lot of it is sitting in fiat bank accounts someplace under the control of Binance and Bitfinex.
The numbers in your wallet may be the same but 3/4's of the value has been removed. You've been robbed and you don't even know it.