:I did not claim that Liverpool has never been champion of England, neither did I say any of the things you mention. 

 :I merely said this page lists clubs that have never been relegated from their current top-tier league. I did not invent this definition, and it surely isn’t my ‘arbitrary date’. The English Premier League and the Austrian Bundeliga have a distinct history. Like I already said, the most logical approach is to look at what each national football association regards as the starting point of its current national top-level league. That isn’s arbitrary, is it? 

 :And even if you assume that the current football competition in Austria started in 1911, why do you keep Sturm Graz in this list? The footnote in the article clearly indicates that this team relegated from the top prior to the establishment of the Austrian Bundesliga. You seem to be unaware of the fact that interpreting ‘current top-tier league’ in a different way, has implications on the entire list. 

 :Also, it is not helpfull to change information that is well sourced. The source concerning Feyenoord states: 

 :If we consider the regional first classes since 1898, the only team never to have been relegated since gaining promotion to the first level is Feyenoord (promoted, as Feĳenoord, in 1921). 

 :You do however have a reasonable point when you claim that PSG has not always played at the highest level. From the same source mentioned before: 

 :Paris Saint-Germain played in the first division 1971/72, but were taken over by Paris FC before the end of the season.  The club had to restart with their amateur team, then in the 3rd division, kept the name, the colours and the president (but  changed grounds), earned promotion to the second division at the end of 1972/73, and to the first at the end of 1973/74. 

 :Maybe you want to include that information in the article?