Not sure while everyone suddently pretends it's not acceptable.
I am absolutely not keen to let troops go on the ground. However, these the military options need to be openly discussed without any taboo. Not only it tells Russia If you don't find an agreement with Ukraine, things will escalate, but in a democracy, you need to have parliament and politicians in the discussions, we talk about kids dying for Kyiv. Is it worth-it ? I don't know, which is why we need to have this discussion.
There is no sudden change, not sending troop was the default stance for most people from day 1. And most politicians agreed with it, so there wasn't much need to speak up against it.
But now that Macron isn't ruling it out, voices against it need to speak up.