No actually that's an opinion.
The SPL is a hideously weak league. As stated, a draw is a bad result in Scotland. If somehow either of the Old Firm are beaten by their minnow opponents, such a loss can seriously derail their season, especially with so much riding on the derby.
It's pathetic and it isn't something that a player in his prime should wish to return to.
Another correction, you (Rangers) don't have any dominance, anywhere. Nor for that matter do United.
By the way, when did we claim to be a "big club"?