I ask you, what kind of weapon can reliably take down a whole armored division at 50kms?
Nuke it.
You fail to get the jist of my post - while you have made a thread around a weapon and want to see it deployed in combat to destroy tanks and other armored vehicles, you are failing to see the bigger picture. War on a battlefield not about a WEAPON, war is about planning, strategy, tactics, deployment, logistics etc.
A force facing an armored division, needs tanks, APC, ATGM, Infantry, Artillery, Aviation like Gunships, Strike aircrafts etc, then a plan either to meet the enemy or trap them inside designated geography. Tactics like combined arms, hitting enemy supplies, how to use weather and terrain against enemy etc and strategy to annihilate the enemy completely or capture their equipment or force a surrender by cutting them off etc. The amount of reinforcements and how to supply own forces etc.
You bring in an ATGM with 10 km range, mount it on a mobile platform and start engaging enemy tanks. War is not that simple.
What if enemy recon detects this ATGM deployment, uses terrain for cover, deploys infantry (mechanized , motorized or foot) against ATGM team and traverses to completely avoid this area till its infantry and artillery finishes off or reduces the ATGM deployment to less than 60%. With 40% assets destroyed in first 1-3 hours of fighting between enemy infantry Vs ATGM teams, the enemy tanks join in the battle and reduce ATGM team to further 30% while losing just 10% Tanks ?
Even if you say that own MBTs are present in the area along with ATGM team, the enemy sends its ATGM teams with infantry to engage MBTs and ATGM team, keeping tanks in reserve for final push till the report comes in that most of MBT and ATGM teams are destroyed.
Infact enemy starts throwing salvos of MLRS before the attack begins by enemy infantry at the location of ATGM team, the MBTs are mobile to advance or retreat, but the ATGM teams are dug in to ambush enemy armor and will become easy targets.
If your ATGM team is covering your MBTs which are on an offensive with your infantry, and enemy knows your ATGM has 10 km range LOS or NLOS, the enemy will lure you in a terrain with natural obstacles to nullify the effect of long range ATGM.
There are just too many variables in a war. This is not a video game against AI or online players.