Javascript is probably one of the most common languages, with Node.JS the most common server-side variant of it, allowing so very many people to contribute.
Also, we live in age where we don't have 100MB systems. At the moment the program is using a whole 30MB, which constitutes about 0.4% of my 8GB system.
I also had criticism in time for open source projects I worked on.
It's not about the person who did it, it's about my opinion and why I wouldn't use it.
Kudos for everyone doing open source.
Comments such as "why didn't you make everything from scratch" probably aren't going to contribute much to the conversation.
Disagreeing with someone isn't the same as shitting on their hard work and good-faith effort to create something useful.