Magento 2.4.9 Hyvä: product page renders “Sold” despite isAvailable() returning true in the same request

One of my products renders a sold label on its product page while the add to cart button shows (and works).
What I tried and verified:
inventory_source_item: qty 1, status 1
cataloginventory_stock_item and cataloginventory_stock_status: is_in_stock = 1, stock_status = 1
Reservations for the SKU sum to zero (order placed −1, order cancelled +1) – later deleted entirely
inventory:reservation:list-inconsistencies does not list this SKU
IsProductSalableInterface::execute() → true; GetProductSalableQtyInterface::execute() → 1.0
All rows in cataloginventory_stock_item are the same to a working product
Full reindex, cache:flush, Redis page-cache DB flushed to empty, var/view_preprocessed cleared, static content redeployed
Cloudflare cache bypassed when curl url for checking so not cache
No third-party plugin on StockRegistry, StockStateProvider or IsProductSalable* beyond core MSI

I tested the file extensively but the template file seems fine and returns true for availability and other products do not have this issue.

Below is a snippet of my template:

$currency = $objectManager->create('MagentoDirectoryModelCurrencyFactory')->create()->load($currencyCode); 
 global $productk;if(isset($productk))
 $product = $productk;
 
 if($product):

    $categoryIds = $product->getCategoryIds(); ?>
        
        <?php if ($product->isAvailable()):?>

        <span class="price-wrapper by_cbn">
            <span class="price"><?php  echo $currency->getCurrencySymbol().''. $block->getDisplayValue(); ?></span>
        </span>

        <?php else:?>       
            <div class="stock unavailable"> 
            <span><?= $escaper->escapeHtml(__("Sold")) ?></span></div>
        <?php endif; ?>
    

    <?php if(!in_array(14, $categoryIds) ) : ?>

        <span class="price-container <?= /* @escapeNotVerified */ $block->getAdjustmentCssClasses() ?>"
                <?= $block->getSchema() ? '' : '' ?>>
            <?php if ($block->getDisplayLabel()): ?>
                <span class="price-label"><?= /* @escapeNotVerified */ $block->getDisplayLabel() ?></span>
            <?php endif; ?>
            <!-- <span <?php if ($block->getPriceId()): ?> id="<?= /* @escapeNotVerified */ $block->getPriceId() ?>"<?php endif;?>
                <?= ($block->getPriceDisplayLabel()) ? 'data-label="' . $block->getPriceDisplayLabel() . $block->getPriceDisplayInclExclTaxes() . '"' : '' ?>
                data-price-amount="<?= /* @escapeNotVerified */ $block->getDisplayValue() ?>"
                data-price-type="<?= /* @escapeNotVerified */ $block->getPriceType() ?>"
                class="price-wrapper <?= /* @escapeNotVerified */ $block->getPriceWrapperCss() ?>"
            ><?= /* @escapeNotVerified */ $block->formatCurrency($block->getDisplayValue(), (bool)$block->getIncludeContainer(),0) ?></span> -->

                <!-- <?php if ($product->isAvailable()):?>
               
                <span class="price-wrapper by_cbn">
                    <span class="price"><?php  echo $currency->getCurrencySymbol().''. $block->getDisplayValue(); ?></span>
                </span>

                <?php else:?>
                <div class="stock unavailable"> 
                <span><?= $escaper->escapeHtml(__("Sold")) ?></span></div>
                <?php endif; ?> -->

Worth noting: when changing the display price to a different currency, that currency shows the price.