There was a news article on Australia a few years ago about these wet wipes that were advertised as biodegradable and dissolved in water, but they were either outright lies or they didn't degrade / dissolve in anywhere near the timeframe that made them suitable for flushing down the toilet - hence an increase in the fatberg problem.
The news article was essentially a public service announcement to not flush those wet wipes unless you want a sewerage problem down the line.
And I read a study a while back that researched this, and analyzed several fatberg deposits. They concluded that there was no trace of biodegradable wipes. And that follows purchasing patterns--99.9% of those bought aren't the biodegradable kind. People just don't care and continue to flush wipes, diapers, fats, cat litter, and who knows what else.
The news article was essentially a public service announcement to not flush those wet wipes unless you want a sewerage problem down the line.