Only if the enemy doesn't have proper fighter jet or money to get 4th or 4.5 generation fighters up in the air armed with air to air missiles.

Armenia for example doesn't have working aircraft with radar and air to air missiles to detect and shoot down Azerbaijan drones using the hilly & mountainous terrain to hide from ground based radar. Hence, these Azerbaijan drones could take sweet time designate targets for guided & unguided artillery strikes or air strikes.

Russia over Ukraine, the Russians were too poor to carry out tactical SEAD operations to destroy most of Ukraine S300 long range SAM and medium range SAM. This means Russian aircraft have to fly low level whenever going into Ukraine. Russian fighters not able to fly high altitude won't be able to detect and destroy Ukraine drones from far. Ukraine drones often loiter low near Ukrainian held areas to keep safe

No, wait after GE and economic recover first then choose proper aircraft. Not waste money on useless junk FA50 nor Tejas that will only end up being shot down by 4.5 generation fighters

US Javelin top down attack missiles already being copied by EU made NLAW and soon Russia & China will come up with theirs after cache of fresh javelins & NLAW already fell into Russian forces hand. This means western MBT too are now vulnerable to top down attack missiles due to thinner armour on turret top.

MBT and IFV will come up with layer of top armour on automated turrets. No more crew in turret and need thicker top armour apart from active protection system that could destroy missiles coming from above. Time for new generation MBT.

Mai189 is right that a tank being hit won't necessarily destroy the CITV, visual thermal optical sights of tanks. It depends where the missile pr projectiles hit and how big is the warhead.

Man portable ATGM usually have smaller warheads meant to penetrate tanks on thinnest armour delivering warhead to kill crew or detonate ammo stowage in order to spark cookoff.

Attack helicopter or vehicle mounted ATGM such as AGM-114 or Vikhr would have bigger warheads to create more damage to tanks penetratimg thicker armour.

Proper air to ground missiles that weighs over 500lb such as AGM-65, Kh-29, Kh-38, Kh-25 would deliver heavier blow that would destroy tanks for real that are carried by aircraft.

Refer IDF Merkava Mk4 and Saudi M-1A2 that suffered ATGM from Hezbollah & Houthi rebels. Numbers of their optics were intact and because they have separate ammo storage from crew compartment, the ATGM injured or killed some of the crew and the tanks were driven back or towed back for repairs. Tanks optics are shielded comes with bulletproof glass to sustain certain amount of hits, robust enough to sustain staggering hits.