You have to discern between
- dataentry pages (please add only if device is supported or if someone is actively working on it or a PR is available)
- devicepages (add devices with or without OpenWrt support, but please no unsupportable devices (2MB flash or thelike))
Regarding adding Synology to the list of brands: I did not read your first posting as "Can you please add Synology to the list of brands". You might want to express your requests a bit clearer next time, so that even simple minded wiki admins get the message and have no excuse 
And as already written in the other topic:
In addition to this, an @ mention would have helped too to get my attention.