State of JS 2024 sentiment issue

**TL;DR: this year we started giving people the option to remain neutral instead of picking positive/negative, and as a result positive sentiment went way down.**

Here's the JS 2024 "front end positivity" chart as it currently stands (survey still ongoing as of now):

The drop is almost certainly due not to a change in respondents sentiment, but to the way we calculate positivity.

Pre-2024, we used a 5-option "scale" to collect data:

- Never heard
- Heard about it, not interested
- Heard about it, interested
- Used it, want to use it again
- Used it, do not want to use it again

Starting this year, we switched to this 3-option + sentiment scale:

- Never heard [posititve/negative/neutral]
- Heard about it [posititve/negative/neutral]
- Used it [posititve/negative/neutral]

In order to harmonize both scales, I decided to code the legacy 5-option scale as follows:

- Never heard -> never heard/neutral
- Heard about it, not interested -> heard about it/negative
- Heard about it, interested -> heard about it/positive
- Used it, want to use it again -> used it/positive
- Used it, do not want to use it again -> used it/negative

This works, but there is one issue: neutral values for heard/used don't exist in the legacy data. This means that 100% of "used it" respondents are allocated between positive and negative buckets, resulting in e.g. a 80/20 positive/negative split for library Foo.

When the neutral value *does* exist though (for 2024) the split is much more likely to be something along the lines of 60/30/10 positive/neutral/negative for the exact same library since many people will default to "neutral".

So the result is this impression that Foo's positivity dropped from 80% to 60% year-to-year.

### Solution

I think I need to change how positivity/negativity are calculated so that neutral responses are discarded, in order to harmonize both scales. Hopefully this doesn't have any other unforeseen consequences…