People have been saying for 18 months that "the next step is sending advisors", and it still hasn't happened.
Ukraine is not South Vietnam. Their military is far more capable, and were training with NATO forces for years before the Russian invasion.
One of the reasons we had advisors in South Vietnam was to coordinate U.S. air and naval gunfire support, but there isn't any of that in Ukraine. Any air support they have is their own.
I'd oppose sending "advisors" out into the field in Ukraine. But I'm not going to oppose aid that doesn't include advisors simply because that might change down the road.
If and when it does, I'll oppose it at that time.