What incredibly enough hasn’t been brought up yet, is the distinction between gender preference and genital preference. In heteronormativity they’re assumed to be the same, but in reality they’re not. This way of thinking also lends itself to the flexibility you’re describing; note the word “preference”.
Can’t believe they lumped the Scandi countries into “other”. Denmark uses “Vuf” ( pronounced almost scarcely like woof) and “vov” about equally, and Sweden + Norway might too.