HA! Barely anyone uses those.

A lot of the sniper rifles are medium penetration, making the striders the perfect target

Barely. Most Helldivers wont even be able to hit it in the heat of battle.

It seems they've made your warstrider even more vulnerable...

Sure they're medium now. But have fun trying to hit those while you're being ripped apart by the War Strider! I doubt that itsy bitsy "weakpoint" is gonna be much of a problem.
The shields on the Devastator was always too heavily armored. It was a waste of resources.
You will need anti tank weaponry to even break the shield and nobody is gonna do that.

Tanks have always been a non issue, idk who even uses the weak point anyway. Just toss a few 2 thermites and it is fried! Also, your war striders have medium armor in the hip now, and those guys were a menace so that is a HUGE nerf for yall. And don't forget your precious shield devestators arent so tuff anymore lol. Whats that saying? One step forward, two steps back.