Google deindexing wordpress blogs again in June 2017

After a major deindexation of wordpress blogs in September 2016, October 2016 to end link selling which competes with google adwords , google has launched another deindexation spree for wordpress blogs again in June 2017.
A domain investor noticed that suddenly 4 blogs were deindexed in June 2017, though there was no deindexation between January and May 15, 2017. It appears that the deindexation is intentional to cause financial losses.
For most of the domains, the domains are deindexed within 1 month of renewal to increase the losses of the domain investor. Now the deindexed domains will be sold so that new domains can be purchased and minimize the losses caused by google
This again indicates how difficult it is to make money online , and estimate the value of the website accurately