I don't think this is neither illegal or even immoral. When the whole livelihood of your lives work depends on you doing wash trading so your volume look high that is still quite acceptable, add the fact that others do it too and you got yourself a no brainer.

Of course from the stats it looks like coinbase is making it way too frequently and they need to chill out a bit but when your wash trading is only 30% or so of your whole trading volume it makes sense. I wish we lived in a world where wash trading was not a thing and than when someone did it we could really go all out on them but when 90% of the market is doing the same thing the ones who do not do it really just either have high volume enough to not care or they are lying about not doing it.