Bonus Journeys applies to Milestone Rewards. You will need 30 actual nights during the promo period (assuming 2021 stays) to hit the 60 night threshold.

What doesn't affect Milestone Rewards is the halving of the qualification criteria. So that's why you have the situation where, under Bonus Journeys, 15 nights will get you to Glob without TSU/Concierge, and 30 nights will get you the full set of benefits.

The poster you quoted will not receive the 60-night Cat 1-7 cert unless and until s/he has 60 Qualifying Nights appear on the account, whether through credit cards or room nights (including Bonus Journeys).