I think Lambert is very good promising young rider what polish commentators talked about is his lack of experience on polish tracks (its his 3rd start in Poland) and in his first 2 starts he had gate 4(worst gate today).
The new rule which is suppose to take effect Nov 1 limits any rider who rides in polish Extraliga(applies to all riders regardless of nationality) to race in only 1 other league.
Relationship between rival fans in Poland are very hostile especially between Gorzow-Zielona Gora, Rzeszow-Tarnow,Wroclaw-Leszno or in the past Torun-Bydgoszcz hence the special sections of stands available to visiting team fans who are seperated at all times,fans are also escorted by riot police(riot police in large numbers are also present at all derby meetings) it is very similar to football but on smaller scale(Celtics-Rangers relationship comes to mind).Some videos to help understand this i myself condone this type of behavior and seen it while at Rzeszow-Tarnow derby many times.
Leszno speedway fans being escorted by police for a match against Wroclaw https://www.youtube.com/watch?v=EDfNXXAAV50
Zielona Gora-Gorzow derby https://www.youtube.com/watch?v=nXrLFRLaFSc&list=LLixlQvDVOCzfjDqCX568AsA&index=247
I don't get too bothered by the profanities but not while on TV or being interviewed. I was near pits in Poland numerous times and for polish riders(majority of them) every other word is basically profanity laced.
British Superbikes have big sponsors because the equipment they use are big well knows moto companies ( Suzuki,Yamaha,Honda,Kawasaki,Aprilia etc) and in speedway you have virtually unkown GM or Jawa(Jawa at least is well known in places like Poland and former eastern bloc counties as they make street legal motorcycles).