Not sure about that specific poster's situation (she says DP so maybe they're not married) but of my circle, which includes a lot of Skilled Worker visa people (I'm on one myself) - it's very common for the Skilled Worker to come here on their own on the work visa, then meet and start dating a British citizen at some point during the 5 years.
If you get married you can transfer to a spouse visa, but it doesn't really accelerate your path. If you switch visas your clock resets and you have to start the 5 years again.
And most people take a few years to go from meeting to getting married, so you're probably close to getting ILR on your own anyway, so everyone just waits it out.
Under the current rules, being married does mean you can skip about 1 year of waiting time between getting ILR and citizenship, but that's it.
The only benefit of switching to a spouse visa would be if you lost your job that was sponsoring you, as you would then have work rights in the UK and not have to limit yourself only to employers which sponsor.