Improving simple bar charts

Here's another bar chart I came across recently. The chart - apparently published by Kaggle - appeared to present challenges data scientists face in industry:

This chart is pretty standard, and inoffensive. But we can still make it better.

Version 1

I removed the decimals from the data labels.

Version 2

Since every bar is labelled, is anyone looking at the axis labels?

Version 3

You love axis labels. Then, let's drop the data labels.

Version 4

Ahh, so data scientists struggle with data problems, and people issues. They don't need better tools.