Trump, I am sure, has persuaded not just the UK but all of the US' traditional allies and partners in NATO, Five Eyes, the EU and so on that the US can no longer be trusted as a reliable defence or trading partner, and that we consequently need to revise the fundamental assumptions underpinning all our post WW2 defence, foreign and trade policies as soon as possible. That's going to take time to implement and, in the meantime, our existing relationships with the US are what they are, so we have no choice but to try to keep Trump onside.
However, as Laurence Freedman says at the end of the article
So, in answer to your question. while it certainly makes sense for Britain and other countries to recalibrate our relationships with the US, we will want to to remain on as good terms as possible, because that's in best our interests. However, that's going to take time, so we have little choice but to try to keep Trump happy in the hope of keeping him onside as much as possible.
When there's a new president, we'll all want to maintain good relations with him, too, which may be more or less challenging than is keeping Trump happy. We'll just have to wait and see.