robots.txt - a PBN Footprint?

Hi guys!
So recently I got a bunch of PBNs (around 200) and what I've noticed is that the previous owner of the network copypasted robots.txt file on each and every one of those. Some of those sites already show positive impact on tests and I was wondering whether it is safe to link them to my money site, or should I change robots in order not to harm the money site?

The robots.txt looks like this:

User-agent: *
Disallow: /wp-admin/
Allow: /wp-admin/admin-ajax.php
User-agent: AhrefsBot
Disallow: /

User-agent: MJ12bot
Disallow: /

User-agent: Rogerbot
Disallow: /

User-agent: SemrushBot
Disallow: /

User-agent: ia_archiver
Disallow: /

User-agent: ScoutJet
Disallow: /

User-agent: sistrix
Disallow: /

User-agent: SearchmetricsBot
Disallow: /

User-agent: SEOkicks-Robot
Disallow: /

User-agent: Lipperhey Spider
Disallow: /

User-agent: Exabot
Disallow: /

User-agent: NCBot
Disallow: /

User-agent: BacklinkCrawler
Disallow: /

User-agent: archive.org_bot
Disallow: /

User-agent: meanpathbot
Disallow: /

User-agent: PagesInventory
Disallow: /

User-agent: Aboundexbot
Disallow: /

User-agent: spbot
Disallow: /

User-agent: linkdexbot
Disallow: /

User-agent: Gigabot
Disallow: /

User-agent: dotbot
Disallow: /

User-agent: Nutch
Disallow: /

User-agent: BLEXBot
Disallow: /

User-agent: Ezooms
Disallow: /

User-agent: Majestic-12
Disallow: /

User-agent: Majestic-SEO
Disallow: /

User-agent: DSearch
Disallow: /

User-agent: MJ12
Disallow: /

User-agent: BlekkoBot
Disallow: /

User-agent: NerdyBot
Disallow: /

User-agent: JamesBOT
Disallow: /

User-agent: TinEye
Disallow: /

User-agent: Baiduspider
Disallow: /

User-agent: serpstat
Disallow: /

User-agent: spyfu
Disallow: /

No, I don't think these are footprints, instead, Google may implement much more advanced AI learning model to detect the "patterns" and decide which domain should de-valued, don't overthink too much I guess.