The capture of Sudzha doesn't mean that a large number of Ukrainians were captured or killed in the process, especially if there was a planned withdrawal. Videos of POWs of social media doesn't confirm or point to either outcome, unless there are credible videos of large-scale POW capture.
You point to previous failures on Ukrainian withdrawals as an argument to support your view, but I think it makes it more likely that they withdrew properly this time. In Pokrovsk, they've taken a better approach than Avdiivka, for example.
I'll go with credible analysts over the shill until evidence suggests otherwise.
A credible analyst wouldn't reflexively accept the propaganda talking points of either side at face value, but instead point to the fog of war and unknowables in the absence of evidence.
Video POVs from both sides are the best insight we can actually get to the situation on the ground, and its a small slice in any given video. There are videos of soldiers in a clearly disorganized night time retreat, there are videos of groups of POWs, lots and lots of videos of captured equipment and corpses on the ground.
What does that actually sum up to? We don't know. If someone without operation level intelligence claims to know the answer, they're probably full of shit. And like I said, its unlikely we'll even know the answer 10 years from now
If we're going with top level analysis from someone with access to the full top secret intelligence briefings available to the US military, well Donald Trump says it looks pretty bad