Whoa guys and girls!
Henry - you have actually 'misquoted' EU OPS! If you look at (c) the "required at the planning stage" is on the same line as (4) En-route alternate aerodrome. You have dropped it a line. NORMALLY an 'en-route alternate' is not specified/used by a company. When it is, those weather restrictions apply. Hopefully knickers untwisted?
Have a look at 1.1.92 ''adequate' (a) [and note the slight difference for ETOPS 'adequate']