Are you really surprised?
Literally every single Scottish GE campaign by the main unionist parties since 2011 has consisted of nothing but "NO" to something, most often a 2nd Indi Ref, and if not that, simply "NO to the SNP".
For a UK that is supposedly the superior option, they do absolutely nothing to sell it and are also remarkably reticent to get into the specifics of what, precisely, is supposedly superior about it. I was looking forward to receiving this year's edition of the Scots Tory election bumph to see if you still had to go over it with a microscope to try and find the part where it actually mentioned Scottish Conservatives, but I haven't actually received anything from them, the only party who haven't mailed me, so it appears they've finally just run out of things to say "NO" to.
The constant wittering about independence whilst the country is in a state of such decline causes this
Here we have half of the infamous "Schrodingers SNP" the Unionists apparently believe in.
"get on with the day job/stop wasting money on Indi/single issue obsessives (as if entire campaigns consisting solely of "no to indi" aren't single-issue obsessiveness)"
Also unionists - "the SNP aren't interested in Indi/too comfy with their cushy Holyrood jobs/gravytrain/know it would be a disaster" and so on.
You can only laugh at the ridiculousness of people who are still terrified of the perfectly normal and mundane notion of a nation governing itself.