Survey Monkey is a US based company. It's just a survey design tool, users can write the questions in whatever way they see fit. Professional research outfits tend to use professional and or proprietary survey tools, rather than this kind of cheap off the peg tool.
That said, you will still see nonsense sex/gender questions in professional surveys and this is because the market research governing body (the Market Research Society aka MRS) has been captured. Professional research companies tend to sign up to the MRS and have to abide by their guidelines. It is insidious and far reaching.
Pdf guidelines below. You will see in the sources that the guidelines were created using 'insight' from research with trans people, conducted by EHRC (also captured)
www.mrs.org.uk/pdf/Guidance%20on%20Collecting%20Data%20on%20Sex%20and%20Gender.pdf