As a side note I think last time thermite was considered an anti-armor solution was early in WWII and it proved inefficient enough to get outclassed by regular anti-tank shaped charge cumulative grenades. Thermite doesn’t burn through armor good enough in practice, let alone there are decent active anti-fire equipment stuffed in modern tanks to negotiate this threat.
In reality, there are no compact ordnance effective against MBTs left.
These are mostly absolete since 1970s. Not only hand grenages, but LAW, RPG. Modern anti-tank weapons are barely man portable.
Hmmm, hadn’t thought of hand grenages! LOL! Have a happy week, friend!