@Derbee oh the irony and nice pivot.
Your first issue with OP was the title of the post, not that the op had said anything at that point (your words)
Your second issue was you picking out parts of what op had said to fit, your agenda OP hates the SC, ignoring what she actually put.
And now we are on to OP is now fine with it so all the things she mentioned so mustn't have been the real reason and she hates the SC and wants everyone to agree.
Here's the thing, she didn't ask for people's opinions to start picking apart why she's using the spare room as a study, and the ethics of not keeping a memorial to SC for the 4 days a year vs needing a place to work.
In my view she's clearly finding Christmas stressful and had this been a mum saying the same thing, she would have had people going yes our house is a nightmare at Christmas everyone's packed in like sardines, don't worry the kids will be fine, maybe lower your cleaning standards but because it's SC we have had comments on the wording of the title post and people "reading between the line" aka projecting saying really snarky comments and everything discussed bar the topic at hand which let's bash the OP because she clearly hates her SC.
Just because the OP has found some useful comments and tips amid the usual shaming and seems mildly happier your now stance is ah well see the problem was SC all along. It's almost like even with all the nasty comments, she posted for advice and empathy, and maybe some realism (aka reduce your cleaning standards) and got some and that has annoyed a good deal of posters looking not to offer actual advice but just to give another person a good kicking.
Now the usual fallback is oh don't post if you just want us all to agree. Funny thing about that, advice and shaming are different and as a support board you would expect people to be human enough to recognise the difference. When she posted she didn't say hey I'm looking for good kicking please pile on as I hate my SC.
I have seen posters be piled on when they aren't being reasonable by SM and mums alike but the default is always pile on SM regardless of what they actually put and a lot of projection.
Adult children are like bloody nailing jelly to the wall, they are also as much as you care/love for them have the ability to get under feet, Christmas is stressful and houses have to stretch to accommodate. No one has died from sharing a room. Adult children have a tendency to be part adult part teenager, the OP needs to just chill a tad.
Lucky this OP is able to hold her own, if this had been a vulnerable Op which many we have had on here and gotten a similar kicking none of us would know the outcome of the impact of that kicking, the only feeling people would have was feeling better for releasing the anger so many of the frequent posters have on here re SM.
This post should have been a pretty shut and open case in terms of chill, it's fine lower standards bit and be Merry.
Also before you think oh your only saying that because your a stepmom. I'm saying this as a adult SC. Having grown up in a blended family and know exactly what it's like and I can tell you, the study thing wouldn't have bothered me or my siblings because this is just the type of stuff we just didn't care about. All of you are making a massive mountain out of a mole hill.