It's interesting.
The statement about public debt is in Section 4 of the 14th Amendment. As far as i know, there is no case law on government pensions in regard to the 14th Amendment. The SC has not ruled favorably on government debt in past cases. According to your argument, the debt ceiling is a violation of the 14th Amendment. It is doubtful that anyone could successfully bring a debt ceiling case to the SC because the SC would not grant standing.
It does not matter if the SC would rule that government pensions are protected by the 14th Amemdment. The Constitution cannot ensure a viable level of economic activity to maintain prosperity. Governemnt spending policies threaten the economic viability of the country. You are deluded into thinking that government employees will be spared the devastion of economic ruin. You represent just another interest group trying to maintain its government spending bounty. You are part of the majority in line for government transfer payments.