You are correct. Lansweeper has always done a few things very very well. At my previous company, we were using it well over a decade but hadn't rolled out Intune there in any capacity.
Where I am at now, first thing I did was roll out Lansweeper but at the time, we were all on prem. There was an Intune project in deep development when I took over and roll out was imminent.
We have since rolled out intune and are using it now as part of a complete asset refresh over the next 3 years. This first year (now) we are currently replacing 60-70 percent of the entire company's laptops..
Of course, we are a little different. We have no mobile devices we manage...at all..we are complete laptop and PC shop that will be completely in azure cloud in the next 3 years and off prem completely, including AD.
And since Lansweeper is my favorite software to use, Im sad, because I don't want to have to look elsewhere for a replacement product next year when its time to renew our licensing...
Lansweeper sees the domain on-prem laptops (as expected) but no new laptops rolled out via intune.
Just to be sure, I pushed out the LSAgent to all computers (including Intune laptops) but nothing.
Its a real bummer.