NOW IMAGINE abt their wallet
ppl having issues withrawing OTN from their platform and sometimes it takes ages as you can read in this tread.
would you leave to such a company your crypto currencies as well? where withdrawing process needs approval 48h

as we all know in crypto world flexibility is the most important so 48h can change totally price of your coins and you will be put at very high risk of loosing a lot of money coz of such a company like IQ who hold on your valuable coins when you need them most and want to use them in other exchange because price jump so much there.
I wouldnt risk and I advice you to think abt it

You are comparing withdrawal procedures on IQ (that get manually processed by the way) to withdrawing from a crypto wallet (which will get processed by the network that pertains to the crypto in question e.g. Ethereum Network for ETH etc.)
If you want to go into bashing mode again, at least get your facts an technicalities straight.