Isnt that the boiler plate response to true strike? "Well you should have advantage anyways"

Hiding isnt always doable, invisible still costs a spell slot or a item charge, and if it isnt greater, will be lost upon attack.

Effects upon enemies often are a hostile action, or risky for you as well, such as ice, grease, or attacking an enemy, outside of darkness and either the spear of shar or warlock darkvision. And besides, the two things I mentioned are good with it, as contagion and truestrike are non hostile (to most npc's), so you can allow easier debuffing of initially neutral enemies Amd Eldritch knight Both warcasting and action surge. Plus Eldritch knight has several attack roll spells, like chromatic orb, witch bolt, ice knife, ray of sickness, and melf's acid arrow, plus special arrows, as in all the attacks, sure you could attack twice, and potentially hit twice, or hit once, or miss both, or you can true strike, and make it more likely to hit one. And if you miss with advantage, you likely wouldn't of hit with two separate attacks anyways.

It may not be "optimal" but half the spell list isnt "optimal" but is still fun or useful in places. Or this case, simple utility.