“wicked buried.” The fact that a wicked person was buried indicated that he or she was buried with respect.
“and were praised.” This translation follows the Septuagint, Vulgate, and several other ancient sources, and makes very good sense in the context and so is supported by a number of scholars. The Hebrew text is that they “were forgotten,” which also could make sense. The wicked practice wickedness to get ahead, but are eventually forgotten just like everyone else.
“pointless.” See commentary on Ecclesiastes 1:2.