I disagree - the split attraction model (e.g. heteromantic asexual, aromantic heterosexual, etc.) works far better, imho, than saying heterosexual asexual - although if there are individuals who feel they are heterosexual asexual, then I of course respect their experience as being different to mine, and their right to self ID.

Most asexual people, though, would feel that heterosexual inherently implies allosexuality (i.e. with sexual attraction/desire,) which is not an accurate description of many people on the Ace spectrum. Many Aro and Ace people do not see themselves as straight, regardless of if they are heterosexual or heteromantic, or not. Many do see themselves as straight - which is perfectly valid. Many see themselves as both straight and Queer - which, again, is valid. Self ID is what matters here.

Additionally, this whole piece has the vibe of excluding Aro and Ace people from Queer narratives (although I understand this may not have been your intention) - which is kind of Acephobic. And potentially an attempt to gatekeep someone else's identity, which is not cool. Aro and Ace people can and do experience bigotry and hate from both within the LGBTQ+ community, and without. Aro and Ace people, for example, are at higher risk of being subjected to conversion therapy than their Allo counterparts.