To me and you, yes. To a business the size of Manchester United, yes. To INEOS? I'm not sure. They seem to turnover incredible amounts of money, are involved with selling and buying businesses all over the place, I trust that they have their shit in order to be honest.
In relation to United it has been repeated by financial people many times over the years that debt can actually be a good thing for large scale businesses. So perhaps it serves a purpose to keep their debt? I don't know finance so don't know the mechanics behind it all, but I reckon they probably know what they're doing when you read about all the ventures (including purchasing us) that they are involved with. If the debt wasn't manageable then I think that would all be scaled back and they'd be looking to pay it down.