First of all, I think there may be a mistake in the documentation regarding the bundle limit, and for that, I apologize and get a fix out presently.
This section of the documentation should read:
The bundle size that can be uploaded is limited to 1 GB for the Free and Starter plans, and up to 5 GB for the Basic, Standard and Professional plans. For the latter plans, note that the rsconnect package has a default bundle size limit of 1 GB, independent of your shinyapps.io plan limit. If you plan to deploy application bundles larger than 1 GB in size, you can override the rsconnect default by setting this option first: options(rsconnect.max.bundle.size=...) where the value is in bytes. Do not set the maximum size larger than the limit for your shinyapps.io plan, or application deployments will fail.
You can compress your data files, deploy, and then uncompress them before reading them to work around the upload limit. Do make sure that you have set the rsconnect option appropriately.
The upload limit should not be confused with the RAM limit, which is 8 GB.