While their figures seem rather large to me, even if the true figures were only half, it's reason enough for me to use a content blocker on Safari. Even if you do your surfing on Wi-Fi all the time, it just makes sense to disable useless content.
I also use Friendly+ for Facebook/Instagram. It includes ad blocking. It's a nice client for Facebook. You can add multiple accounts with color themes.
Friendly Plus with AdBlock : login with multiple facebook, instagram or messenger accounts by Friendly App Studio https://appsto.re/us/4AqXw.i
Interesting - I just downloaded 1block to my phone and will give it a whirl - Safari does seem quicker without the frippery. ( Admop shows $2.29 by comparison )
BUT - I get this message when trying to set up 1block on my iPad ( original mini )
Developer Marco Arment created a content-blocking app, Peace, that rose to the number-one spot in the App Store's paid apps. It remained there about 36 hours.
He then went on to "not feel good" over his content-blocking app's negative effect on some people "who didn't deserve the hit," and pulled the app from the App Store. Apple refunded all purchases, and he went on to lose a buttload of money.
What an idiot.
UPDATE: eiC does not let me post the correct link to the article. It keeps on auto-correcting spelling in the URL. It adds an apostrophe, which breaks the link. Here is the URL: http://www.marco.org/2015/09/18/just-doesn't-feel-good You'll have to manually remove the apostrophe from the word "doesn't".
I did a bit of reading about the Adblock I'm trying and its use of 'vpn' .... Seems above board but not really giving me a 'warm fuzzy feeling' BUT Safari is a lot quicker not loading the plethora of ads .... If anything starts going strange on my I have bookmarked how to disable it ...