For years, the Lib Dems have struggled with the accusation of ‘irrelevance’. They have pointed out quite rightly that smaller parties struggle against an electoral system which works against them, and media which give most of the attention to the two big parties.
For Nick Clegg to now lay into the SNP leader as "irrelevant" and a "two bit player" smacks of double standards. Nether does it do anything to encourage respect, or aid the development of a ‘new politics’. But the most important point is that it perpetuates an arrogant narrative also held by the two big parties, which suggests that smaller parties have little of value to say.