Imprecise terminology often causes bad thinking. A “tank” could be a MBT, or it could be an armored personel carrier with very limited offensive capabilities.
And the lightest Panzerfaust tandem charge antitank rocket can kill the heaviest tank.
You can also equip like 30 people with that weapon and scatter then around forests, taking advantage of the tanks relatively poor visibility. (Tanks have cameras, periscopes and other optics, but usually are pretty bad at overall awareness unless the commander sticks their head out the top to look around)
Well, a tank does consistently fire from 3km ranges. As a support vehicle, its essential in the long-range combat of today.
At 3km+ out, no Panzerfaust or AT4 can hit the tank. Only a guided Javelin, but those are heavy (heavy for an infantry to carry at least) and expensive.
But yes, the whole plan of today's combat is combined arms. Tanks doing what tanks do best: long range sniping and sometimes taking advantage of armor to say... get rid of anti-personel land-mines and other lesser explosives.
Imprecise terminology often causes bad thinking. A “tank” could be a MBT, or it could be an armored personel carrier with very limited offensive capabilities.