If the points per game idea has been brought in because relegating a team with a game in-hand would be unfair - because that team might win their game in hand- then this is a flawed solution which is equally unfair for the exact same reason.
Currently, we have 25 points from 28 games, giving us 0.89 points per game, which would relegate us according to this table in the Express: https://www.express.co.uk/sport/football/1269721/Premier-League-table-points-per-game-how-season-finish-scenario
If we had played our game in-hand and won it, we would have 28 points from 29 games, giving us 0.97 points per game, which would keep us up.
So anyone who thinks that keeping the table as it stands is unfair, because teams with games in-hand could win them, must accept that the points per game solution is not a solution to that issue.