Some architects eschew the bowtie completely, signalling their disdain for formality. Some want to keep well away from the shadow of the great architects of the past.
This may run deeper than antipathy towards mainstream conventions; it may be to do with sensory issues (as with those experienced by people on the autism spectrum). Architects may love texture in buildings and landscapes, but can go crazy when in contact with or constrained by textured fabrics. The signature architect look of T-shirt or open necked shirt under a jacket is not just a statement of style, but can be essential for sanity.
So the bowtie may be suppressed but not successfully.
Many architects wear clothes or adornments that distinctly resemble the bowtie.
and prefer to play with the spirit of the bowtie in their design work.
Bowtie sculpture outside Gehry’s disney cnncert hall in LA.
And of course utzon’s iconic (bowtie) building
Architects’ wives have been known to serve bowtie pasta to architects in deference to their husbands’ special professional status.