That is typical of the misinformation spouted by visa agents and immigration lawyers here. Very unprofessional. There are numerous errors of fact on that page.
Col 1 and 3 should be essentially similar. You have visas and extensions mixed up. Extensions always require a visa beforehand; Visas never require a visa beforehand. There should be five columns (not three) and they should all be for visas (extension come afterwards)
1. O from home (marriage)
2. O from home (retirement)
3. OA from home
4. O from Thailand (marriage)
5. O from Thailand (retirement)
#2 is not available in all countries.
Also, re-entry permits are also available for 3800 baht for unlimited entries.
Reporting is every 90 days (89 actually) - not very three months.
You should have an extra row to specify the length of the visa (90 days or one year). And one more row for the price of the visa (2000 baht for the ones obtained in Thailand). And one more row to answer the question, "Do the funds have to come from abroad to obtain this visa in Thailand?" Answer: "Yes, for retirement. No, for marriage. Or N/A."
Another error: the security deposit does not have to be in a Thai bank for that O-visa obtained in your home country.
Rather than the question being "Permitted to work in Thailand", it should say "Allowed to get a work permit".
Lastly, the combined method for marriage visa/extensions is on the books, but it is not actually accepted. You could also have trouble using the combined method for retirement at many offices.