I think people are reading too much into this sales figure. If the stock situation in the US is anything like here in the UK, Xbox Ones, whether S or X have been very thin on the ground but you can find PS4s without much trouble. MS pulled the plug on One X production early and there aren't enough One S consoles to go around. Due to Covid-19 and quarantine/lockdown etc. there was a big increase in demand for consoles and MS just don't have the supply.
I'm with you on this, the way they are opening up their games to other devices/platforms shows that they won't care much about selling you the box in the future, they just want your subscription. I expect to be able to play the Xbox game catalogue on the Playstation 6
However, I like competition. As much as I enjoy Sony's offering I wouldn't be happy for them to be out there running unchecked without a direct competitor