I have hidden two previous remarks because of the accusatory style of the posts.
If you have any issues with the quality of the (Czech) data, the only way to get it fixed is to list those issues. List them according to what the original data is, what it should be and if necessary explain why. Keep it short, simple and factual.
Please post cleanly and without accusations. There goes a lot of work into researching (I am one myself) and unfortunately errors will be made.
Local users will likely know (much) more and their knowledge and input is very much appreciated by SI and the researchers.