No, I disagree on this your statement here, I mean the bold words in your write up, what makes you think it's a wasted victory?
Don't you see that they are fighting with Brentford to qualify for the uefa conference league?
Who? it's over.
When Nottingham Forrest beat West Ham, there's no way for Brighton to qualify for Conference League.
That's why the won against Liverpool including Tottenham (if they won in the next match) is pointless, what's the point to win when you can't get something and you also didn't lose anything.
This is just a fun match, both of them use few young players to get experience.