The heavy load of custom WordPress development, code updates, and time-consuming marketing with cobbled-together resources can strip away a marketer's biggest advantage - speed.
If you have the average number of plugins needed to just run your website, plus additional marketing services that have been cobbled together to support all the channels and target audiences you're trying to reach, then you probably don't have an effective website. You instead have a FrankenPress, a sum of parts that doesn't lead to an effective whole. Even if your website looks good, cobbled-together resources from both the website and the marketing tools add-ons is slowing you down and keeping you from effective marketing.