It says Employment contract or employment certificate, so I would guess so. Or if you are self employed evidence of your work/portfolio/contracts etc. as stated.
I’m inclined to agree. For me it’s the UK. I’m still on the electoral roll, I bank in the UK. Have bills I pay in the UK. But I don’t spend at least 6 months in the UK.
If people are saying I need to be in the UK for 6 months to be a tax resident then where is my tax residency as I travel pretty much permanently? non of which are really places for at least 6 months 🤷♂️