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If you don't like them, break the Lectern.
Tested 26.3
The Lectern displays a Book and Quill or a Written Book so that anyone can read it. It is also a redstone component and the workstation of Librarian villagers.
It is made with the Crafting Table from Bookshelf and 4 × Oak Slab (or another variant). It is mined with an axe. As fuel it burns for 15 seconds in a Furnace, enough to smelt 1.5 items.
What it does
Use a book on the Lectern to place it, then use the Lectern to read it; several players can read the same book at once, and you can take the book back from the reading screen. Ordinary books and enchanted books cannot be placed.
Each time a page is turned, the Lectern sends a short redstone pulse. A Redstone Comparator placed behind it reads which page is open, so a book can work as a selector for doors or secret passages.
An unemployed villager can claim it and become a Librarian, the villager who sells enchanted books. Since it is mostly wood, it burns as fuel.
How to craft
Crafting table 
4 × Any of #wooden_slabs + Bookshelf → Lectern
// Slots with several items cycle through every accepted option.
How Lectern connects
3 links · from the 26.3 game dataIn structures
Ancient CityJob site · Librarian
VillageJob site · LibrarianWorks in
Furnacefuel · smelts 1.5 items15 sTutorials with Lectern (3)
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If the cured villager is unemployed, place the workstation you want next to it, for example a Lectern for a librarian.
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If a fresh Librarian has a bad offer and you have not traded with him yet, break his Lectern and place it again until he offers the book you want.
Tested 26.3
Block states
| facing | north · south · west · east |
|---|---|
| powered | true · false |
| has_book | true · false |
Tags
#minecraft:blocks_dolphin_jump#minecraft:blocks_fluid_flow#minecraft:blocks_lava_fire_spread#minecraft:blocks_motion#minecraft:blocks_motion_in_heightmap#minecraft:blocks_motion_in_heightmap_no_leaves#minecraft:blocks_motion_no_leaves#minecraft:causes_suffocation#minecraft:entities_can_teleport_to#minecraft:ice_melts_when_destroyed_above#minecraft:mineable/axe
Lectern · FAQ
How do you get Lectern in Minecraft?
At the Crafting Table: 1 × Bookshelf and 4 × Oak Slab (or another variant) give 1 × Lectern. Mining the block drops it.
What is Lectern used for in Minecraft?
It holds a book that players can read together, sends redstone signals when pages turn, and is the Librarian's workstation.
What tool do you need to mine Lectern?
The fastest tool is the axe.
Can Lectern be used as fuel?
Yes. In a Furnace it burns for 15 seconds, enough to smelt 1.5 items.
What sound does a note block make on Lectern?
Placed under a Note Block, Lectern gives the Double bass sound.
Can a piston move Lectern?
No: pistons cannot move it.