question about someone who reccomended setting up larger slc cache

so like i made a post somewhere else relating to a drive matter but some one reccomended doing this

 How full is it? A 1TB QLC drive should be partitioned to 750GB at most, so the other 170GB is left as SLC cache and so write leveling doesn't need to be excessively aggressive. If this is a full-drive partition, and it is full, then it is write leveling far more than it should as it desperately tries to shuffle data around to reclaim the limited number of empty cells.

Reminder: 170GB of QLC is really only about 10GB of physical cells. A 921GB partition with 900GB of data on it? That has about 1GB of cells to work will.

my drive is a sn2vs100g

but is it true what the user said and how do i set it up? (i know some rough things about pc how to manage my way trough partitions and control panel and device manager and registry etc but stuff like this idk)

so how do i set it up and should i? tought id ask here for second opinion and when i do this will my drive be wiped or no?

and also rn i try to have atleast 150gb free on the drive should i still leave space free on the drive if i do said thing above ifso how much? its a 1tb drive