Is it me or udes 15/16 just doesn’t work?

I recently bought back the udes 15/16 because I'm enjoying the hulldown gameplay of the stb1.

But while the Japanese med is a beast, almost op at times, the swedish counterpart just seems useless.

In teory the turret should be good, because of armor+ slope. But the thing is basically autopen for anyone firing HEAT (so 90% of players in tier 10) and even then it has a quite obvious cupola weakspot.

Hull is incredibly weak and the thing catches fire 1 every 3 games: arty often hits you for 500-600 and lights you on fire, meaning game over.

It doesn't even work as a sniper because of an awful combination of low pen/slow apcrs and SUPER SLOW, low pen HEATs with mediocre accuracy.

Meaning this thing has literally all cons a tank could have when sniping.

The only use I found for it is spotting, op camo plus boosted view range make this thing outspot even light tanks. I more often than not end the battle with 4-5k spotting but only 800-1200 damage lol

Tldr: is there a specif way to play/ enjoy this thing that I'm missing? Or is it just and outdated tank?