plugin dev around here is lacking any real effort.
Please stop making comments like this.
The code is free and open source so you’re free to fix it.
You sound entitled. If you’re paying for the plugin you can complain like this.
The lack of effort is really on your part if you’re not willing to contribute.
That partial is on all pages that display a list of topics ie /recent /unread /popular and /category pages. You need to create a plugin and add hooks for those pages the hook format is filter:<template_name>.build in those hooks you need to go through the topics array and subtract one from each topic's postcount.