Newtuber looking for advice

Dear Community, I have started a new channel in tech niche a month back and my first video fortunately gained some traction. It gave me almost 600 subs and nearing 1000 watch hours. Its could be beginner’s luck or maybe I found a good fit. Nevertheless, in the video I have used a few seconds of AI generated clips (10-15 seconds in a 9 minute video) since I couldn’t gather suitable stock videos for a few lines of content. While posting the video, I declared my use of AI, but this is now backfiring. I am getting hate comments telling me that it is AI generated crap. It took me more than 50 hours to create this 9 minute video. To write the script, do the voiceover, edit and what not. And now some people think that it’s all AI BS, just because I declared the use of AI. I tried to explain them about my efforts as a human, but the comments turned into ridicule so I deleted them. How do I deal with such a situation? Should I not declare that I have used AI if it is only a few seconds?