Youd have a point if all "recce" situations were approximately the same, i.e. 3 gun comps are all approximately the same. Home defense is going to be approximately the same. CC is approximately the same. (Anyone who uses the term "sniper rifle" is just wrong.)
Reconnaissance in the pacific northwest differs greatly from reconnaissance in Afghanistan. "Recce" is situation dependent. There is no "one size". (and using the wrong terminology in one situation is not justification for using incorrect terminology in another).
Well I certainly can’t force you to use useful and broadly understood terminology that conveys information concisely
You’re free to spell out that you’re referring to a:
16”ish AR
Match grade barrel
Mid weight barrel
Sturdy Free float handguard
Flash hider (no break)
Magnified (but not too much) optic
Fast but also distance capable reticle
Duty grade in all components
Combat related accessories as appropriate (light, laser, bipod, etc.)
Fed match grade ammunition that also exhibits good terminal performance
I’ll just say, “recce” and anyone in the know will understand all of the above.