Absolutely you can, you don’t even need 700 corruption, this was even possible before the whole bonus stability patch.
It is important that you will go as deep as possible within an echo web.
The further the distance from the starting point, the higher timeline stabiltiy an echo will grant.
Empowered timeline require 800-900 timeline stability to be able to fight the boss.
Here are a couple of examples from a Timeline that is at 539 corruption currently
This is on a depths of ~19 echoes and you can have even deeper echoes
Even the echoes like at a depth of ~10 echoes give enough timeline stability, that you can unlock one boss fight with less than 6 echoes (if you fill up the bonus timeline stability fully)
Realistically you will not fill up the bonus timeline stability on every single echo completely, but if one echoes can give up to 200 timeline stability and you do like 50-75% of the bonus timeline stability you can easily achieve a boss run after 5-6 echoes.
But even on timelines with lower corruption you cna still unlock the bonus within 6-8 echoes.
Like in this one, that is currently at 441 corruption
Every MoF boss/Shade has two 50/50 normal drops, where it is guaranteed to drop one of two items.
This is not affected by %inc. item rarity.
All other MoF Boss drops and Shade Of Orobyss drops are affected by %inc. item rarity.
This is very noticeable.
This was introduced a while ago in Patch 083
PS: If you disagree with someone or think he is wrong, there are more nice and civil ways to communicate that. Please try to be a little bit more mindful next time, thank you 