I just want to point out that while our attention is often captured by those high-profile cases - Legendary, DT members, etc - the vast majority of banned users are newbies and other low ranks, and that has always been the case.
The following tables illustrate what you meant by pointing out around 87% of total banned cases from 11/5-15/5/2019 come from Member ranks and below, includes Copper Member (just 14 cases).
Overview (from 11/5/2019 to 15/5/2019)In general, there are 1124 total banned users during the period from 11/5/2109 to 15/5/2019. Ranks from Brand new to Member (including Copper Member) account for 986 banned cases which equal to 87.7% of total banned cases.
In the same period, there are 63 (5.6%), 43 (3.8%), 25 (2.2%) and 7 (0.6%) users at Full Member, Senior Member, Hero Member, and Legendary ranks got perma-banned, respectively
Details:Sorted by ranks

Sorted by percentage of rank-based banned users per total banned users
