Are the DMARC changes required when sending less than 5000 emails a day?

[CapsuleRecords]

I am not technical at all and am getting spooked by the need to make changes on my domain.  I contacted my domain provider and was told the DMARC could not be added to my email service and that I would have to move/upgrade (at quite an expense) to a dedicated MS360 service.  Which is a pain on a few levels.  But then I found this article (https://support.google.com/a/answer/81126?hl=en-GB&visit_id=638412589191916693-438820448&rd=1#zippy=...) on google which seems to imply that the rules insisting on having this DMARC thing will only apply if you send >5000 email a day.  So, tempted to leave things as they are.  But fear that the solution detailed in the recent Spotify email ("If you take no action, we will rewrite your sender email to [a Shopify email rather than my branded email} to meet the minimum requirements so that you can continue sending emails to your customers with no interruption") will still apply and my customers will start getting my emails from a different address??  I'm so confused...  Anyone out there that can help me navigate this please?

[onescales]

all sites need this. in the url you sent (which is official from google) there is a dropdown section about the 5000 which says "Requirement for all senders" which means under 5000