I think whether or not it's worth the risk will depend on your average order value, and whether you can successfully deflect any issues that can arise between posting and having the package get its first scan. For example, say you mark the order as shipped, upload the tracking number, but a week or more goes by with no updates and the buyer starts asking questions. Or 2 weeks go by and eBay starts hitting you with late postage defects because the first scan was outside of your handling time - you can't go "below standard" due to late shipments, but you can lose TRS, and you are afforded extra seller protections for being TRS, so at the moment I think it's relatively important to maintain.

I always lodge mine over the counter so that I have proof of post pretty much for as long as the lodgement receipt lasts, which is handy for chargebacks initiated through PayPal, since I receive payments through PayPal on my website; not too sure whether eBay just relies on their onsite records for chargebacks initiated 6+ months after the purchase, though I assume so. But, the main point is sometimes they miss scanning one and while I would think it's a bit different for international parcels, with domestic, often they are not scanned again until the day of delivery, the ones they miss always - pretty much without fail - are the highest value packages I've lodged that day (such is my luck, LMAO), so it always causes a lot of stress until they pop up in the system. If it was just the occasional $10 order, I'd still be annoyed but not checking up on it every day 🤣