Ethos is much easier to remember and a better name that Bitquence for branding purposes. I think they take seriously be a global and powerful brand, and change name was necessary. As well the company recently hired a reputed product manager and I think he proposed this change to improve the future prospects of the company.
But in Binance still BQX, I think this is a problem...many people discover the token in coinmarketcap as ETHOS and then can't find in Binance...both Binance and now ETHOS are losing potential traders because possible confusion..hope they are able to solve this situation soon
Usually such changes occur within one to two weeks! In purses it happens a little faster, with time everything stabilizes - this is a short-term trend!
One or Two weeks !! in cryptocurrency world 1 week = 10 weeks !!