When asking questions, I think it is polite to spell out initializations in the title. People not in your field will read the title too, and would like to know

When asking questions, I think it is polite to spell out initializations in the title. People not in your field will read the title too, and would like to know if it is worth clicking to read the whole question or not. Not sure, but I think "GTM" here means "Google Tag Manager".