Possible Clues:

• Blundering general in Rome once, not Uncle Sam
• Little credit given to idiot of little sensitivity
• Lacking sensitivity
• 'Gross, vulgar (5)'
• Thick ground cover, good going for cricket, initially?
• Tactless, boorish
• Grossly dull
• It is stupid to give credit to the fool
• Blatantly materialistic
• True '70s punk band