Should a trad published author pay for book launch promos?

As I'm working on a book proposal to send to an agent, I'm wondering about the “Marketing" section. @Thomas Umstattd Jr. has said that traditionally published authors shouldn't pay for advertising, but I'm wondering whether this also applies to the launch? I need to put something there, and these are my ideas so far. I'd love any advice or suggestions you ask might have, thanks!

This is my marketing plan for a cozy rhyming bedtime board book, so far:

• Podcast interviews (possibly birth story podcasts, and Christian parenting podcasts)

• Broad distribution in physical stores across North America through two key distribution contacts I have connections with (but should this belong under Marketing Plan, or Platform? The Canadian Christian distributor is a local guy I've chatted with, who verbally committed to buying my book, and the American Christian distributor is someone a friend of mine has worked with.)

• Pitching the book to someone at Early On, who gives a free board book to every baby at local midwifery clinics

• Email marketing (almost 200 subscribers, haha, but I put that under platform)

So should I also commit to buying Bookbub ads, Booksweeps giveaways, or anything else in that vein? Is that applicable to board books? Maybe I just need to come to the Novel Marketing Conference. Is the Book Launch Blueprint method for indies only, or also trad pub? Who pays for the promotions? Or am I nuts to pitch a board book as a debut, to a Christian agent? My email list and website target Christians, but this board book is totally secular, though affirming of safe, cozy values or whatever. Not sure where to post this, but thanks!