Should you slam your road bike stem? Can this even be comfortable?

I progressively reduced the height of my Canyon Ultimate stem, even sourcing a special extra low baseplate usually not supplied as standard. But what should we consider before going that low?
Here I cut my steerer to slam the stem    • I cut the fork of my Canyon Ultimate ...  

I am trying to analyse the fit from my own personal experience, I never have a bike fit and I’m just sharing my thoughts. If you are in doubt consult a professional bike fitter first!

I am wearing a long sleeve M4 thermal jersey and SRX bib tights, both size L, thanks to my collaboration with Siroko. If you would like to shop for Siroko cycling clothing you can use my link for an extra 10% discount.
I am 185cm tall and 87Kg.

The link will take you to Siroko website with the prices already reduced and you will also help me out, thank you! Visit https://srko.co/fede1275

Let me know your stem set up and how you are finding the fit, I will like to hear from you.

Thank you again for watching,
Federico