I'm aware a CEO taking accountability and admitting fault is a rare thing to see these days but some of y'all should really follow his lead and admit having unnecessary account links are lame as hell. Level of severity of this issue varies from mild inconvenience to not being able to play the game anymore. I don't care if the store page stated it and I don't care if it has been mentioned in news posts in the past. The game works without it so why impose these restrictions at all? It was abhorrent when Microsoft imposed it on Minecraft players and it's annoying when I get prompted for a login on Sea of Thieves and Halo Infinite on a fresh Windows install. Just let these games be platform agnostic until someone wants to link their account for cross progression purposes. Stop getting in the way of people enjoying your game.
I'm never going to play Helldivers 2 on Playstation hardware and crossplay as its currently implemented works without the link so why should I need a PSN account? It's a completely arbitrary restriction that serves no purpose to PC-only players and the cynic in me assumes it's all about data harvesting.
First, they don't need a PSN account to harvest your data. At all. Trust me, and if you don't, online you will find a lot of good resources about this topic. If they, or anyone else, wanted your data, they would get it. Proprietary account or not.
Second, there are legitimate benefits to all players with such a requirement, including PC gamers only. Improved crossplay functionality, which improves the health of the game's userbase and thus the ongoing support it receives, which is good for everyone even if someone decides to not personally use it; and improved user handling, mostly it should improve the capabilities of Arrowhead/Sony to properly ban bad actors without being dependent on Valve and which once again should help improve the health of the game's userbase. There might be more benefits I'm unaware of plus further benefits for multi-platform users of course but those should be irrelevant to a PC only gamer who plans to remain one.
Obviously, there are also benefits for Sony, mostly improved ecosystem reach. I don't know how this would affect PS's MAUs, if at all. Perhaps others know more.
Lastly, everyone is entitled to their opinion, feeling, taste or preference but those by themselves don't make a legitimate issue worthy of support or solution. Assuming you are in a country supported by PSN, you were properly informed of this requirement since the very beginning and in spite of this you freely chose to buy the game. The terms of the deal have not been altered in any way. That's why people such as myself say there is nothing wrong with what's happening here. Now that said requirement has been implemented you are also free to drop the game if you choose to do so. But no one has acted wrongfully during this whole procces. Everything changes if you are one of those people that are not in a supported country by PSN.