Some people simply can't see through their own brand of bigotry to the reality, and the reality is we played the OF a total of 5 times last season, 2 of the 5 against Rangers, and lost them all. All of them without Hastie who will this time be available to play against Celtic. As you say, any points against the OF at any time are a bonus not an expectation. And that applies for the entire league.
Calling that absolute reality a 'mentality' is absolutely mental. The OF haven't been winning the league for almost 4 decades due to a mentality among the opposition. They have been doing it because of a massive financial advantage that's as great at this time as it has ever been.
Last season alone they spent over £20 million between them in the transfer market. The rest of the league combined spent a total of around 500K, Motherwell spent nothing, effectively operating in the freebie charity shop market along with everybody else compared to the OF shopping at M&S.
And that's brutal reality, not a mentality problem. If the management team who just secured a 3rd place finish with only the 8th largest budget in the league think Hastie is good business then so do I. They're the experts not merely pundits on an internet forum.
Hastie is of a quality we couldn't afford outside a deal like this. The fact he can't play against Rangers is irrelevant to the 3rd place at best finish everyone outside the OF is aiming for.