Tanks and other armoured vehicles

Even with reduced power the RWR detection range is always going to be double the radars effective range assuming they are using detectors of similar sensitivity.
Sure the radar manufacturer has the advantage of tuned length antenna but I can't see variable length antenna being any harder to implement than an extendable antenna that retracts into a Faraday cage.
Is there something fundamental I'm missing? Has it ever been combat tested against HARMS?

It's largely an industrial production scale problem. 200 T-14 instead of 100 can't change any major conflict.
5 000 T-72B3M can (they've officially upgraded all their T-72 in line to T-72B3 or BM standard. AFAIK currently there is no T-72 modernization ongoing, last orders were modernization of T-90As and T-80BVs).
Same with Boomerangs, when they now have a shitload of BMP-3 (all tanks/regiments brigade are equipped, heavy infantry is still mostly on BMP-2 though) and the BMP-2M upgrade is a really a big improvement in firepower, it's not really urgent.
Also they're thinking of upgrading BMP-1 with the BTR-82 turret (as most BTRs are now up to 80A, 82 or 82A).
Basically they're making the choice to upgrade back-line (and even reserve) gear while the new production lines for the new gear get sorted out rather than trying to aggressively push through the new stuff.

They have something like 7 000 BMP-1 in reserves…

I really can't dumb it down any more.

The RWR is not a giant antenna, its not nearly as sensitive as a radar to incoming radiation. It also can't see the multiple frequencies being used by the radar, and even if it did the tiny power consumption on each wavelength is going to be lost in background noise.

These radars have been tested in combat for decades, in the 80s we were down to the point where we were putting miniaturized LPI radars on fighters, which means your fighter can paint an enemy and the enemys RWR wouldn't tell him he's being targeted. This was used in both desert storms and ever since then.

if anyone can identify the poor bastard contracted for vid related, do we know what sort of financial hardship forced him to sell his dignity to a Japanese record label?

Adding weight limits to tanks was a mistake. 70 tons is simply not enough to compete with modern AT weaponry.

APS can't stop literal flying rods travelling at 2,000 meters per second. I'd never risk the lives of my men, especially when Western Nations suffer from low population and birth rate. We're not chinks. We can't put thousands of men in garbage light-armored vehicles and send them to battle to die, and then replace them within 45 minutes with the next wave.

Fine, make it a drone then.

Ignore the leaf, he has no idea how phased arrays work. AESA is stealthy for three reasons:
Firstly, AESA produces a very narrow beam with largely undetectable sidelobes, so it's nearly impossible to pick up unless it's looking almost directly at the receiver.
Second, they have excellent frequency agility, which prevents less sophisticated RWRs from figuring out that successive pulses are coming from a single source and prevents modern sets from identifying what the signal is actually coming from.
Third, they can change their pulse rate on the fly, which makes it almost impossible to tell where the signal is coming from unless the plane has a phased array of its own.

A humvee is 4500mm long, so this missile basically takes up the entire crew cab.

There's no such thing as carrying a decent stock of these.

Yeah it can.

Nigger that is LITERALLY WHAT I SAID.

How heavy do you want to go? I doubt that you can really AT-weapon-proof something without going heavy beyond practical.