Your stitched-together stack is a snitch with extra steps

Hot take: chaining five separate services to run one campaign doesn't make you sophisticated, it makes you five times as observable.
The "best of breed" crowd loves assembling a tool here, a tracker there, a filter somewhere else. Every integration point is a new party that sees a slice of the operation and a new seam where the story doesn't quite line up across logs. Consolidation is unfashionable because it sounds like vendor lock-in.
But every extra tool in the chain is another set of eyes and another inconsistency waiting to be correlated against you.
Agree? Fight me in the comments.