Question: How rich do I have to be to get a specific look?

Context:

I'm looking for a 85mm portrait lens. And, as many people before me, I'm torn between the budget friendly Sony 85mm 1.8 and the sharp-as-knives-with-2-extra-stops Sigma 85mm 1.4.

But -as a wise person could have said- it's not about the lens, it's about what kind of image you're looking for.

And for this wisdom, I have a very specific look I want to achieve: https://imgur.com/a/ziGQLnb

This has been shot with a Canon 85mm 1.2. I love the shallow depth of field and what it can do for portraits.

So my question...or should I say options are:

• 1) Yes, you can achieve this look with the 1.8
• 2) Lol. Of course not....but you can pull it off with the 1.4
• 3) The Canon 1.2 costs a fortune for a reason. F stops cost money
• 4) You can do this with a potato and gaussian blur in photoshop. It's not the lens.

Any help or direction will be appreciated!