Well it might have changed the war somewhat since it would happen before Russia had dug in and mobilized.
But I imagine any gains would be lost eventually after Russia mobilized.
However, I am not sure I believe this report. As other reports suggest NATO wanted to run a blitzkrieg/D-Day suicide run to break through the Russian lines as the summer counter offensive but UKR said no. They preferred the piece meal probing attacks and diverted many troops to defend Bahkmut rather than storming the Russian lines.
Ukraine had all the momentum in 2022. That was the time to sever the land bridge.
The only catch is that Ukraine may be short of ammo at that time.
That was better. I still think they wasted too many troops defending Bahkmut.