Politics is behind all of this. Whole Varanasi city is planned to get a overhaul by 2026 & Yogi himself has stated in public to make Varanasi the capital of UP in coming 5 yrs. Under his request Ayoydhya Allahabad line was prioritized for completion of Electrification. Not only 15101/02, 15023/24, any 1 train out of 12589/90 or 12591/92 is slated to run via MUR - AY Jn. - AYC/FD Jn. - SLN - PBH - PFM - PRYJ/ALD line