1. The consulting brigade have long experience in building/architecting data projects in "Teradata-way" and belives that customers need a centralized data processing box where they would do the best in class ETL in Teradata. Although they are trained and seasoned to do load-stage-intigrate-prepare data only, they are self-complacent to belive they are in analytics world.
2. Many (not all) Executive/Industry Consultant/Customer facing managers/technology/Parctice leaders believe that there are nothing beyond type 2 dimension in the world of Data Analytics. "Leftover of the Industry" is a derogatory term I believe and thus I would just say this league 'Mediocre'. You would only see them retire from TD and not to find a job elsewhere.
3. Never closely worked with the senior management, but all what I could see is if there are 5 customers , there would be 20 executives (Partners, VPs and above) in Teradata for that country/region (that too for years!!!). Moreover, Teradata let aspirants play musical chair for CEO and other 'C'- level chairs (very rare these days).
4. Put a close watch in Teradata's linkedin posts; these get reactions in two-digit figures unless the post is about technology-agnostic issues (like '4th July celebration') or includes a popular ooled brand name like 'Amazon' or 'Google' (e.g. Teradata Vantage is GA in AWS). If you further dig those respondants, all youd would see are Td's employees( Seems they are either strongly schooled or paid for 'Likes'). This gives a clear indication that when it comes to outside TD world, which includes customers too, nobody takes TD seriously when talking technology.
TD has a dedicated PR and marketing team. They would definitely come after this review on Glassdoor. But they should better focus on point 4.