But in fact they publish our emails in spreadsheet, is this what is called professional

We know that email is privacy and not for publication.
How do you think?
It is a bad practice indeed, to reveal email address of bounty campaign participants for many reasons (you might get spam or malware links etc)
With that being said, have you contacted anyone from Bounty Detective and asked them about that issue (it can be sorted easily, basically just one click of the mouse) and another thing, do they reveal email address on all of their bounty campaign spreadsheets , or that was just the case of the bounty campaign you joined?