It was inevitable that other European countries let Ukrainians in "no questions asked" originally tbf.
(indeed, not just that but arguably morally right too)
But more than two years on, its quite reasonable for people to want a more controlled approach.
No it's not "morally" right to have a complete uninhibited open border policy, to basically allow a single passport to have unfettered access the whole of Europe, to overcrowd public services in some countries but not others, mainly because its not fair on the refugees themselves! It's evidence that the people who design these rules don't listen to people who actually work on the ground processing and dealing with housing, education, etc.
I could give you about 50 anecdotal examples of why letting the Ukrainian passport be a free pass was a terrible idea from my own experience and that of people I know who directly work in the Immigration department of the Interior Ministry of Belgium, who are not your far right bonehead types, but you'll see the next election that the ivory tower liberals will get punished and hopefully it'll make you wake up and smell the coffee.