So if it won't change, what is the point of this? I get that Thunderbird (Mozilla corp) wants a mobile client, but if its just the same horrible app with a reb

So if it won't change, what is the point of this? I get that Thunderbird (Mozilla corp) wants a mobile client, but if its just the same horrible app with a rebrand, what does it actually offer (since desktop thunderbird is still pretty awful and recently has got to the point where gmail is preferable)?