It's all down to taste of course but the best of the Czech beers certainly are hoppy, Bohemia grows some of the finest hops in the world and beers such as Pilsner Urquell, Budweiser Budvar and Staropramen ( amongst others) use plenty of them. It's fair to say lower quality beers use lower quality hops and less of them.
It's possible that some are being pasteurised for export or brewed in the UK under license... Staropramen certainly is, it's still reasonable but nowhere near the wonderful draught Staropramen I drank every night in Prague.
When I was a lad I worked in a pub in London.....a Taylor/Walker pub.....we sold three draught lagers.....the cheapest being Castelmaine4X and the most popular, followed by Skol which were both pretty dire. The third was Lowenbrau which cost a few more pennies but was well worth it.....lovely stuff and did the business
The draught Staropramen we had in Prague was absolutely incredible. Even the Kozel was pretty good, which is one of the worst beers known to man if drunk anywhere else on the planet! That's definitely brewed under license in many places, which is completely pointless. But even bottles of Czech Staropramen and Budvar don't taste anywhere near as good over here.
They're very different to the New World hops that we get in modern IPA's. Bitter, floral, and quite subtle, but much less fruity and skunky. I love my IPA's, but the Czech beers were a work of art. I'd say that the Pilsner Urquell was probably the best. The thing is, a brewer can hide plenty of dubious flavours if they use enough of something like Chinook or Centennial. No chance you can do that when using noble hops.
Although I've taken the mick out of Castlemaine 4x lager, I did sup it in the pubs in the early-mid 90s. Along with Labatts the Canadian stuff, and McKewans lager as well!!.