Are you sure the estimates of the fluoride intake and fluoride consumed respectively are wildly incorrect in light of this? This isn't the best source of information but using data from here (
https://www.teausa.com/teausa/images/Tea_Fact_2021.pdf) you can put the estimate at the number of cups of green tea consumed by the average US citizen at 0.1 per day. This is definitely concerning for someone drinking lots of green tea but I don't think it invalidates the statistics. The EPA study also does account for tea consumption, stating in some contexts it forms the highest component of fluoride intake from beverages.
For the second article, this is interesting information and I can see causes for concern in the study (there were multiple hick-ups in the peer review process), and ideally high-quality randomised control trials would form the basis for a conclusion. But what is your opinion on policies of water fluoridation in light of this (I know you are a different commenter than who I was replying to, and don't expect your opinion to be the same)? Is it that people should be focussing on studying its (potentially harmful) effects in light of iodine exposure within regions? The link you posted, written by members of Parents of Fluoride-Poisoned Children, states that:
> As fluoride toxicity is directly related to iodine status - and iodine toxicity to fluoride status -, both mass-supplementation programs require urgent reassessment on a global scale.
and also asks:
> Furthermore, we call for the proper evaluation of the toxicity of fluoride on neurodevelopment based on the extensive body of evidence that addresses the impact on iodine and thyroid hormone metabolism.
They (Andreas Schuld) also state in a later article (https://substack.com/home/post/p-139843513) that:
> We also learned that most of the research linking fluoride to thyroid dysfunction had been actively suppressed by public health agencies worldwide, including the World Health Organization (WHO), the European Scientific Committee on Health and Environmental Risks (SCHER), as well as the U.S. CDC, the Agency for Toxic Substances and Disease Registry (ATSDR), the NTP, and the EPA.