Is This Brickwork Defective on Year old Extension? All manner of questions and solutions to problems and issues surrounding the subject of brickwork, blockwork and stonework

[catgirl2005]

Hi we had an extension built this time last year. I am not happy with parts of the pointing . In some places if you run a finger down it, it will crumble away. Also it has come away a lot in corners and there is some effervescence (white marks) in places. I am not though if I am just being fussy about the pointing so would appreciate opinions . Photos attached