Not data analysis, just weakly argued opinion. Author even accuses “Germany’s virologists” of “lying”.

While this seems like pessimistic bias I think much of the confusion about mortality rates stems from the multiple definitions. Is the denominator infected, symptomatic or hospitalized? These three estimates - still very uncertain today - will vary drastically.

Here’s some actual data analysis on this subject: https://www.nature.com/articles/s41591-020-0822-7