Fewer, Less or Lesser

A short lesson on grammar.

I am often amused by how often people in this region tend to mix up their comparative, in respect of "fewer, less and lesser".

Firstly,
few, fewer, fewest : are used with countable nouns, e.g. people, coins
little, less, least: are used with uncountable or abstract nouns, e.g., money, water, love, honesty

This morning, I just heard a lady speaker who speaks very fluent English say, "... less people ...". I was taught from young to say "fewer people", but it seems that in modern standard English practice, the usage of less here is increasing, rightly or wrongly.

However, what is clearly incorrect is to use lesser to mean fewer or less. It seems many do not know the difference between fewer/less and lesser,
e.g., they say. "I have lesser money", when they should say, "I have less money".
Or, "There are lesser people here" when it should be "there are fewer people here".

Lesser in fact means, "smaller, as in size or importance; inferior, e.g., a lesser evil.
Many years ago, I watched the film, "Children of the Lesser Gods" as a child. Lesser Gods clearly does not refer to fewer gods, but to gods who are inferior (to a higher or more superior god).