The way I handle those, especially with the people who leave me 8 minute long voice notes, is to have WhatsApp transcribe the voice note for me. Or, if that’s not possible, either ignore the voice note or listen to it at 2x speed.
I can't understand why whatsapp does not provide tgat out of the box. Telegram has it on the paid plan, which is nit ideal but at least somewhat out of the box solution.