Which bit don't you agree with? The second, presumably -- but, if not, why not?
I can agree that if the Russian military pulls back unconditionally within the next week, then one can argue that such universal entry conditions for refugees would become unnecessary, and it would be better instead to pump money into Ukraine to help it rebuild. On the other hand, I think the changes of Russia pulling out so quickly are unlikely at the moment, since it would be tantamount to admitting a defeat for Putin, and as I have expressed elsewhere, such a humiliation would be the end of him. Therefore what's more likely is that the war drags on -- and, since nothing short of victory would satisfy Putin, that would lead to increasing numbers of Ukrainians being displaced. In that scenario, why would the UK wish to continue to restrict Ukrainian refugees from entering without a pre-existing immediate family connection? It would be unsustainable to justify this. Especially when the EU has already agreed to unconditional entry for Ukrainians for the next three years.