Only Admins can delete Wiki content. There are nine. Three have not been active since 2016, 2017 and 2018. Apart from me, the rest appear to be developers of FPC+/Lazarus with contributions mainly confined to current development (releases, code merges, new features, breaking changes etc).
I was a lawyer (now retired) for which I hold multiple undergraduate and postgraduate law degrees. I have no programming qualifications. My programming experience in chronological order:
* CBM BASIC, 6502 machine code for a BBS (VIC-20)
* C for FidoNet BBS and utilities (PCs)
* DCL for a primitive editorial publishing system (VAX super-minicomputers)
* Bourne shell scripts and C for an SGML editorial publishing system (Solaris.- Sparc)
* Delphi 1-7 for tax calculators (for CDs) and ISAPI DLLs (for Windows servers)
* Delphi 1-7 for ADSL router utilities, one ported to Lazarus + FPC in 2007 (PCs)
* XUL-extensions (I was a developer and reviewer for addons.mozilla.org)
* Bourne shell scripts and C for massively automated text transformations (Solaris.- Sparc + Intel)
* Since June 2019, Lazarus + Free Pascal mainly on macOS, and to a small extent FreeBSD
Anyway, the brief autobiography is to highlight that I am not a qualified judge of the existing Wiki material. I've written most of the Wiki macOS material and some FreeBSD material, but I'm not technically qualified to rate the quality of the other Wiki material for the purpose of deleting it.
Which brings me to the point, finally: Who's going to carry out the Wiki policy?