The brain is very good at turning complicated features in to abstract concepts. In fact that is mostly what some parts do. So, not clear if this actually improves things or not.

For example, the == and === look quite a bit similar in the font. You have to compare relative sizes, whereas with the normal fonts you can count the spaces.

The rest of the ligatures look pretty cool!

You probably mean = and ==. They have 3× difference in width, which, in practice (I’m using Fira Code for a year now), is more than enough to tell the difference.

Regarding the difference between == and ===, latter has three lines (and so does !==), so in fact in Fira Code === and !== the looks implies the meaning, whether in other cases you have to bend your mind to accept that negation of “three equals” is a “two equals and a bang”