There is no advertising, no hype. I don't see the game discussed anywhere online general gaming is discussed. PC is delayed 2.5 months after Xbox open beta, seriously dampening the hype on the platform where the majority of players is. In fact, there's still 0 communication about the PC version.
This is just plain wrong. There is plenty of advertising for the game. There are hundreds of ads for it on social media that pop up all the time. A lot of video game media has been talking about the game as new info is revealed. Multiple game forums have been talking about it since CBT was announced. There also is communication about the PC version, since they have kept ensuring people that it is still coming in Spring 2020 and that it now has a set timeframe of late 2020. Since it would also have to be after maintenance, it is very likely to be on May 26, since that would be the only maintenance scheduled in late May if they keep to their "currently scheduled every two weeks" maintenance plan, which would also mean that they have already pretty much given away the exact date. They have also confirmed cross-play, and that is all the info that really needs to be discussed before release on the PC.
To add to this I actually recently seen an ad for PSO2 on youtube. Granted googles ads are targeted, but that means they are in fact advertising the game.