Don't know where y'all get that from. It's very common to have 2+ fouls without a point deduction, in fact it happened earlier in the card. If you get points deducted after 1 foul, you'd have guys like Leon Edwards and Jon Jones having 5-10 points deducted per fight then you'd be complaining about too many point deductions ruining fights. Pretty sure Leon was stopped like 5 times in the fight with Kamaru and it only resulted in 1 point deduction.
The eye poke was not "vicious" because vicious literally means it was deliberate, so it being accidental does matter. It also occured when Cejudo was moving forward into it, unlike most eye pokes which are from the poker pawing at the face of the fighter who gets poked. That doesn't make it less of an eye poke, but I do think it makes it less likely to be punished.
At the end of the day the rules give the referee full discretion in those situations, and the professional referee disagrees with you. That being said, I do think something needs to change about fouls, I dont this fight had a problem with them. Just an unfortunate, but very common situation.