Earlier quoted context omitted.
From https://www.merriam-webster.com/dictionary/decimate Decimate is a word that often raises hackles, at least those belonging to a small but committed group of logophiles who feel that it is commonly misused. The issue that they have with the decline and fall of the word decimate is that once upon a time in ancient Rome it had a very singular meaning: “to select by lot and kill every tenth man of a military unit.”…
The more language is allowed to drift, the harder it becomes to read old language. I think this is a particularly silly case, but in general, the complaint that people are misusing words shouldn't be met with "It's impossible to misuse words", which this argument implicitly is.
No one allows or disallows language to drift, there are no language enforcers. This argument is not “it’s impossible” but rather it’s pedantic to claim a word is misused, when it’s been used this way for hundreds of years and so the original definition is no longer applicable.