The phrase "a bad thing then" is correct and usable in written English.
It can be used to express a negative judgment or conclusion about a situation or statement that has just been discussed.
Example: "If we don't address the issue now, it could lead to a bad thing then, affecting our project's success."
Alternatives: "a negative outcome then" or "an undesirable situation then".
If lip synching is such a bad thing, then why is it the hottest thing on cable television?
If you accept that adding 30 billion tonnes of greenhouse gases to the atmosphere every year is a bad thing, then you have to accept that someone should do something about it.
And we can tell the difference: "If your son knows that going down the street and clubbing your neighbor with a mallet is a bad thing, then playing this is O.K".
"If more people vote for a bloke who will break the economy all over again and wants people to believe aspiration is a bad thing then – as a self-appointed Dragon – I am out.
If you're a good card-carrying liberal and you take the position that invasion of privacy in violation of the Constitution is a bad thing, then you'll, of course, be voicing your outrage about what's happening.
Again, if increased serotonin leads to increased emotional influence on our moral deliberation, and this is a bad thing, then it again seems to follow that we should reduce serotonin levels, and thereby decrease this biasing influence.
Monetary policy was also too tight the main reason, argued Milton Friedman and Anna Schwartz in a brick of a book 45 years ago, why downturn became Depression.It is no bad thing, then, that as an academic Ben Bernanke studied the Depression in earnest looking in particular at how an impaired banking system had made the slump longer and deeper.
If you start to vent and let out your anger that you have balled up during your day at work, after you get home, on the target-child who did some unrelated bad thing, then the child won't trust you to be fair and reasonable.
Now think of a few bad things, then think of a way that they're good or teach you something.
"It's a long trajectory, and you need people to help guide it along, which isn't a bad thing, because then they value it".
The socialism was not a bad thing back then, except when it didn't work, but that's not why they gave it up, not because it was a bad thing.
