Glad to see you back on this site, and resuming work on this VN! I hope things are going well in your life, and that you're in a decent headspace.
Regarding the reason you originally left this site -
Honestly, some people just suck, period. And with the anonymity the internet provides, there's just no filter or desire to maintain basic human decency and respect. You just have to take all the negativity at face value and not take it personally, otherwise all of it bleeds into your real life, causing adverse effects. While everyone is free to leave a comment or provide criticism, not everyone has you/your project's best interests in mind, not every comment is objectively correct, and not every person is unbiased and fair. Some people are assholes just because they can get away with it.
You might already be doing this, but I would suggest you to make ample use of the "Ignore" button on toxic commenters' profiles. And, to take the majority of feedback from your actual Patreon supporters, the people who are invested in you and your work. And to minimise your interaction on this site.
While I may not be able to financially support your work, I do genuinely wish good fortune and tidings upon you and yours. Please keep making great VNs, and do take care of your mental health. After all, without you, excellent stories like "Picture Perfect", "Secret Summer", "Follow The Leader", and "Sun Breed" wouldn't exist.