VDB Validation is showing warnings, but failing deployment

The deployment of a vdb is failing due to 2 warnings:

13:29:01,076 WARN [org.teiid.PLANNER.RESOLVER] (Worker2_async-teiid-threads4) TEIID31193 Table Persons columns size not same as Materialized View

s columns size
13:29:01,077 WARN [org.teiid.PLANNER.RESOLVER] (Worker2_async-teiid-threads4) TEIID31194 Column PersonObject in Table Person and Column name in Materialized View PersonMatView should have same type
13:29:01,080 INFO [org.teiid.RUNTIME] (Worker2_async-teiid-threads4) TEIID40073 The metadata for the VDB PeopleMat.1 is loaded, however it is not valid. Check models for errors. Correct the metadata and re-deploy.
13:29:01,080 INFO [org.teiid.RUNTIME.VDBLifeCycleListener] (Worker2_async-teiid-threads4) TEIID40003 VDB PeopleMat.1 is set to FAILED

I changed the MetadataValidator class to remove the warnings and the VDB deployed ok. If an issue is going to fail deployment, shouldn't it be on an ERROR?

Regarding the warnings:
1. regarding column size, is it required that all columns in the materialized table to be writable?
2. the 2nd warning was due to the 1st warning.