Could be me being naive but I couldn’t recognise those as what they were from the TV. Makes me think the Vuelta coverage was a convenient smoke screen (see also random stops at ports which are more often intelligence led, not random)
Agree: very hard to spot they are marijuana plants from the telly box, but I am guessing the position and density of the plants would have triggered alarms. Guessing growing weed on roofs is a thing in the town/country?
In this country the police look out for house where the snow melts on the roof.
I find it surprising that the growers didn't realise the bike race would generate helicoper footage.