I feel like people are becoming very rapidly dismissive criticism of Rogue Core because 'It's not Deep Rock Galactic'.
Pretty much any time anyone brings up the criticism that Rogue Core is receiving, there are just as many people saying that 'they shouldn't have expected DRG 2' or some variant thereof. However, the problem there is there's plenty of people with criticism of the game that's entirely valid and based solely on what Rogue Core actually is that is being dismissed by people because they bring up DRG at all.
To be utterly frank, Rogue Core genuinely does have issues right now in my experience. It's not that it doesn't feel like DRG, or that it's a roguelite. It has real problems that you can feel just from playing the game.
Just... actually listen to what people have to say when they don't like the game? Even if their criticism does include the phrase 'It's not like DRG', there's a big difference between "it doesn't play like an updated DRG" and "It lacks aspects that were present in DRG and it feels worse as a result".